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  Subjects -> ENGINEERING (Total: 2298 journals)
    - CHEMICAL ENGINEERING (192 journals)
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    - ELECTRICAL ENGINEERING (104 journals)
    - ENGINEERING (1209 journals)
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ENGINEERING (1209 journals)                  1 2 3 4 5 6 7 | Last

Showing 1 - 200 of 1205 Journals sorted alphabetically
3 Biotech     Open Access   (Followers: 7)
3D Research     Hybrid Journal   (Followers: 19)
AAPG Bulletin     Hybrid Journal   (Followers: 7)
AASRI Procedia     Open Access   (Followers: 15)
Abstract and Applied Analysis     Open Access   (Followers: 3)
Aceh International Journal of Science and Technology     Open Access   (Followers: 2)
ACS Nano     Full-text available via subscription   (Followers: 252)
Acta Geotechnica     Hybrid Journal   (Followers: 7)
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 5)
Acta Polytechnica : Journal of Advanced Engineering     Open Access   (Followers: 2)
Acta Scientiarum. Technology     Open Access   (Followers: 3)
Acta Universitatis Cibiniensis. Technical Series     Open Access  
Active and Passive Electronic Components     Open Access   (Followers: 7)
Adaptive Behavior     Hybrid Journal   (Followers: 11)
Adıyaman Üniversitesi Mühendislik Bilimleri Dergisi     Open Access  
Adsorption     Hybrid Journal   (Followers: 4)
Advanced Engineering Forum     Full-text available via subscription   (Followers: 6)
Advanced Science     Open Access   (Followers: 5)
Advanced Science Focus     Free   (Followers: 3)
Advanced Science Letters     Full-text available via subscription   (Followers: 9)
Advanced Science, Engineering and Medicine     Partially Free   (Followers: 7)
Advanced Synthesis & Catalysis     Hybrid Journal   (Followers: 17)
Advances in Calculus of Variations     Hybrid Journal   (Followers: 2)
Advances in Catalysis     Full-text available via subscription   (Followers: 5)
Advances in Complex Systems     Hybrid Journal   (Followers: 7)
Advances in Engineering Software     Hybrid Journal   (Followers: 26)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 16)
Advances in Fuzzy Systems     Open Access   (Followers: 5)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 11)
Advances in Heat Transfer     Full-text available via subscription   (Followers: 22)
Advances in Human Factors/Ergonomics     Full-text available via subscription   (Followers: 26)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 9)
Advances in Natural Sciences: Nanoscience and Nanotechnology     Open Access   (Followers: 30)
Advances in Operations Research     Open Access   (Followers: 11)
Advances in OptoElectronics     Open Access   (Followers: 5)
Advances in Physics Theories and Applications     Open Access   (Followers: 12)
Advances in Polymer Science     Hybrid Journal   (Followers: 41)
Advances in Porous Media     Full-text available via subscription   (Followers: 4)
Advances in Remote Sensing     Open Access   (Followers: 40)
Advances in Science and Research (ASR)     Open Access   (Followers: 6)
Aerobiologia     Hybrid Journal   (Followers: 2)
African Journal of Science, Technology, Innovation and Development     Hybrid Journal   (Followers: 5)
AIChE Journal     Hybrid Journal   (Followers: 32)
Ain Shams Engineering Journal     Open Access   (Followers: 5)
Akademik Platform Mühendislik ve Fen Bilimleri Dergisi     Open Access   (Followers: 1)
Alexandria Engineering Journal     Open Access   (Followers: 1)
AMB Express     Open Access   (Followers: 1)
American Journal of Applied Sciences     Open Access   (Followers: 28)
American Journal of Engineering and Applied Sciences     Open Access   (Followers: 11)
American Journal of Engineering Education     Open Access   (Followers: 9)
American Journal of Environmental Engineering     Open Access   (Followers: 17)
American Journal of Industrial and Business Management     Open Access   (Followers: 23)
Analele Universitatii Ovidius Constanta - Seria Chimie     Open Access  
Annals of Combinatorics     Hybrid Journal   (Followers: 3)
Annals of Pure and Applied Logic     Open Access   (Followers: 2)
Annals of Regional Science     Hybrid Journal   (Followers: 8)
Annals of Science     Hybrid Journal   (Followers: 7)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2)
Applicable Analysis: An International Journal     Hybrid Journal   (Followers: 1)
Applied Catalysis A: General     Hybrid Journal   (Followers: 6)
Applied Catalysis B: Environmental     Hybrid Journal   (Followers: 18)
Applied Clay Science     Hybrid Journal   (Followers: 5)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 12)
Applied Magnetic Resonance     Hybrid Journal   (Followers: 4)
Applied Nanoscience     Open Access   (Followers: 8)
Applied Network Science     Open Access   (Followers: 1)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 5)
Applied Physics Research     Open Access   (Followers: 3)
Applied Sciences     Open Access   (Followers: 2)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 5)
Arabian Journal for Science and Engineering     Hybrid Journal   (Followers: 5)
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 4)
Archives of Foundry Engineering     Open Access  
Archives of Thermodynamics     Open Access   (Followers: 7)
Arkiv för Matematik     Hybrid Journal   (Followers: 1)
ASEE Prism     Full-text available via subscription   (Followers: 3)
Asia-Pacific Journal of Science and Technology     Open Access  
Asian Engineering Review     Open Access  
Asian Journal of Applied Science and Engineering     Open Access   (Followers: 1)
Asian Journal of Applied Sciences     Open Access   (Followers: 2)
Asian Journal of Biotechnology     Open Access   (Followers: 8)
Asian Journal of Control     Hybrid Journal  
Asian Journal of Current Engineering & Maths     Open Access  
Asian Journal of Technology Innovation     Hybrid Journal   (Followers: 8)
Assembly Automation     Hybrid Journal   (Followers: 2)
at - Automatisierungstechnik     Hybrid Journal   (Followers: 1)
ATZagenda     Hybrid Journal  
ATZextra worldwide     Hybrid Journal  
Australasian Physical & Engineering Sciences in Medicine     Hybrid Journal   (Followers: 1)
Australian Journal of Multi-Disciplinary Engineering     Full-text available via subscription   (Followers: 2)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 9)
Avances en Ciencias e Ingeniería     Open Access  
Balkan Region Conference on Engineering and Business Education     Open Access   (Followers: 1)
Bangladesh Journal of Scientific and Industrial Research     Open Access  
Basin Research     Hybrid Journal   (Followers: 5)
Batteries     Open Access   (Followers: 6)
Bautechnik     Hybrid Journal   (Followers: 1)
Bell Labs Technical Journal     Hybrid Journal   (Followers: 23)
Beni-Suef University Journal of Basic and Applied Sciences     Open Access   (Followers: 4)
BER : Manufacturing Survey : Full Survey     Full-text available via subscription   (Followers: 2)
BER : Motor Trade Survey     Full-text available via subscription   (Followers: 1)
BER : Retail Sector Survey     Full-text available via subscription   (Followers: 2)
BER : Retail Survey : Full Survey     Full-text available via subscription   (Followers: 2)
BER : Survey of Business Conditions in Manufacturing : An Executive Summary     Full-text available via subscription   (Followers: 3)
BER : Survey of Business Conditions in Retail : An Executive Summary     Full-text available via subscription   (Followers: 4)
Bharatiya Vaigyanik evam Audyogik Anusandhan Patrika (BVAAP)     Open Access   (Followers: 1)
Biofuels Engineering     Open Access   (Followers: 1)
Biointerphases     Open Access   (Followers: 1)
Biomaterials Science     Full-text available via subscription   (Followers: 10)
Biomedical Engineering     Hybrid Journal   (Followers: 15)
Biomedical Engineering and Computational Biology     Open Access   (Followers: 14)
Biomedical Engineering Letters     Hybrid Journal   (Followers: 5)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 18)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 34)
Biomedical Engineering: Applications, Basis and Communications     Hybrid Journal   (Followers: 5)
Biomedical Microdevices     Hybrid Journal   (Followers: 9)
Biomedical Science and Engineering     Open Access   (Followers: 4)
Biomedizinische Technik - Biomedical Engineering     Hybrid Journal  
Biomicrofluidics     Open Access   (Followers: 4)
BioNanoMaterials     Hybrid Journal   (Followers: 2)
Biotechnology Progress     Hybrid Journal   (Followers: 39)
Boletin Cientifico Tecnico INIMET     Open Access  
Botswana Journal of Technology     Full-text available via subscription   (Followers: 1)
Boundary Value Problems     Open Access   (Followers: 1)
Brazilian Journal of Science and Technology     Open Access   (Followers: 2)
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 10)
Bulletin of Canadian Petroleum Geology     Full-text available via subscription   (Followers: 14)
Bulletin of Engineering Geology and the Environment     Hybrid Journal   (Followers: 14)
Bulletin of the Crimean Astrophysical Observatory     Hybrid Journal  
Cahiers, Droit, Sciences et Technologies     Open Access  
Calphad     Hybrid Journal  
Canadian Geotechnical Journal     Hybrid Journal   (Followers: 30)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 44)
Case Studies in Engineering Failure Analysis     Open Access   (Followers: 8)
Case Studies in Thermal Engineering     Open Access   (Followers: 4)
Catalysis Communications     Hybrid Journal   (Followers: 6)
Catalysis Letters     Hybrid Journal   (Followers: 2)
Catalysis Reviews: Science and Engineering     Hybrid Journal   (Followers: 8)
Catalysis Science and Technology     Free   (Followers: 7)
Catalysis Surveys from Asia     Hybrid Journal   (Followers: 3)
Catalysis Today     Hybrid Journal   (Followers: 7)
CEAS Space Journal     Hybrid Journal   (Followers: 1)
Cellular and Molecular Neurobiology     Hybrid Journal   (Followers: 3)
Central European Journal of Engineering     Hybrid Journal   (Followers: 1)
CFD Letters     Open Access   (Followers: 6)
Chaos : An Interdisciplinary Journal of Nonlinear Science     Hybrid Journal   (Followers: 2)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 3)
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
Chinese Journal of Engineering     Open Access   (Followers: 2)
Chinese Science Bulletin     Open Access   (Followers: 1)
Ciencia e Ingenieria Neogranadina     Open Access  
Ciencia en su PC     Open Access   (Followers: 1)
Ciencias Holguin     Open Access   (Followers: 1)
CienciaUAT     Open Access  
Cientifica     Open Access  
CIRP Annals - Manufacturing Technology     Full-text available via subscription   (Followers: 11)
CIRP Journal of Manufacturing Science and Technology     Full-text available via subscription   (Followers: 14)
City, Culture and Society     Hybrid Journal   (Followers: 24)
Clay Minerals     Full-text available via subscription   (Followers: 10)
Clean Air Journal     Full-text available via subscription   (Followers: 2)
Coal Science and Technology     Full-text available via subscription   (Followers: 3)
Coastal Engineering     Hybrid Journal   (Followers: 11)
Coastal Engineering Journal     Hybrid Journal   (Followers: 5)
Coatings     Open Access   (Followers: 4)
Cogent Engineering     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 4)
Color Research & Application     Hybrid Journal   (Followers: 1)
COMBINATORICA     Hybrid Journal  
Combustion Theory and Modelling     Hybrid Journal   (Followers: 14)
Combustion, Explosion, and Shock Waves     Hybrid Journal   (Followers: 13)
Communications Engineer     Hybrid Journal   (Followers: 1)
Communications in Numerical Methods in Engineering     Hybrid Journal   (Followers: 2)
Components, Packaging and Manufacturing Technology, IEEE Transactions on     Hybrid Journal   (Followers: 27)
Composite Interfaces     Hybrid Journal   (Followers: 6)
Composite Structures     Hybrid Journal   (Followers: 268)
Composites Part A : Applied Science and Manufacturing     Hybrid Journal   (Followers: 193)
Composites Part B : Engineering     Hybrid Journal   (Followers: 274)
Composites Science and Technology     Hybrid Journal   (Followers: 192)
Comptes Rendus Mécanique     Full-text available via subscription   (Followers: 2)
Computation     Open Access  
Computational Geosciences     Hybrid Journal   (Followers: 15)
Computational Optimization and Applications     Hybrid Journal   (Followers: 7)
Computational Science and Discovery     Full-text available via subscription   (Followers: 2)
Computer Applications in Engineering Education     Hybrid Journal   (Followers: 8)
Computer Science and Engineering     Open Access   (Followers: 19)
Computers & Geosciences     Hybrid Journal   (Followers: 29)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 6)
Computers and Electronics in Agriculture     Hybrid Journal   (Followers: 4)
Computers and Geotechnics     Hybrid Journal   (Followers: 11)
Computing and Visualization in Science     Hybrid Journal   (Followers: 6)
Computing in Science & Engineering     Full-text available via subscription   (Followers: 32)
Conciencia Tecnologica     Open Access  
Concurrent Engineering     Hybrid Journal   (Followers: 3)
Continuum Mechanics and Thermodynamics     Hybrid Journal   (Followers: 7)
Control and Dynamic Systems     Full-text available via subscription   (Followers: 9)
Control Engineering Practice     Hybrid Journal   (Followers: 43)
Control Theory and Informatics     Open Access   (Followers: 8)
Corrosion Science     Hybrid Journal   (Followers: 25)
Corrosion Series     Full-text available via subscription   (Followers: 6)
CT&F Ciencia, Tecnologia y Futuro     Open Access   (Followers: 1)

        1 2 3 4 5 6 7 | Last

Journal Cover Corrosion Science
  [SJR: 1.931]   [H-I: 130]   [25 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 0010-938X
   Published by Elsevier Homepage  [3118 journals]
  • A Phase field method for modelling anodic dissolution induced stress
           corrosion crack propagation
    • Abstract: Publication date: Available online 26 December 2017
      Source:Corrosion Science
      Author(s): T-T. Nguyen, J. Bolivar, Y. Shi, J. Réthoré, A. King, M. Fregonese, J. Adrien, J-Y. Buffiere, M-C. Baietto
      The phase field method is a powerful tool for studying microstructural evolution in various domains of material sciences, including phase change, initiation and propagation of fracture. In this work, a new formulation is developed based on the phase field method for modeling stress corrosion cracking (SCC) induced by anodic dissolution. This method was applied for modelling SCC of an aluminum alloy (2xxx series) in a saline medium (NaCl), which allows considering the effects of both electrochemical and mechanical processes. The classical phase transition model for material dissolution is coupled with the mechanical problem in a robust manner, providing an efficient tool for studying the competition between electrochemical and mechanical contributions to fracture. A numerical implementation based on finite elements is elaborated. The numerical results are compared to experimental data obtained by in situ microtomography.

      PubDate: 2017-12-27T12:01:31Z
       
  • A crack-free anti-corrosive coating strategy for magnesium implants under
           deformation
    • Abstract: Publication date: Available online 24 December 2017
      Source:Corrosion Science
      Author(s): Kwang-hee Cheon, Chao Gao, Min-ho Kang, Hyun-do Jung, Tae-Sik Jang, Hyoun-Ee Kim, Yaning Li, Juha Song
      Surface patterns can be used as a selective coating platform on metal surfaces, in particular, under various deformation conditions because they induce local strain gradients along with pattern geometry. In this study, hard and flexible coating materials were introduced to regions with small and large deformations, respectively, on patterned magnesium (Mg) surfaces. Despite significant deformation, a polymer-ceramic coating on patterned Mg maintained its protection, as opposed to a ceramic coating on a flat Mg surface. Our proposed approach can be implemented in various Mg-based medical-device platforms by optimizing surface patterns on Mg depending on their loading conditions for clinical use.

      PubDate: 2017-12-27T12:01:31Z
       
  • Stabilization treatment of cultural heritage artefacts: In situ monitoring
           of marine iron objects dechlorinated in alkali solution
    • Abstract: Publication date: Available online 20 December 2017
      Source:Corrosion Science
      Author(s): F. Kergourlay, S. Réguer, D. Neff, E. Foy, F.-E. Picca, M. Saheb, S. Hustache, F. Mirambet, P. Dillmann
      The preservation of archaeological iron artefacts necessitates stabilization treatments. For this study, such treatments were applied, in aerated and deaerated NaOH solutions, to Roman iron bars excavated from a marine site in order to understand the evolution of corrosion layers composed of ferrous hydroxychloride β-Fe2(OH)3Cl. Their transformation was monitored in situ by micro-diffraction under synchrotron radiation and characterized ex situ using multi-scale complementary analytical tools. The formation of transient phases such as ferrous hydroxide Fe(OH)2 was identified in both media and chlorinated green rust GR(Cl−) occurred in aerated solutions, showing the influence of dissolved oxygen on the transformation processes.

      PubDate: 2017-12-27T12:01:31Z
       
  • Exploring the effects of organic molecules on the degradation of magnesium
           under cell culture conditions
    • Abstract: Publication date: Available online 20 December 2017
      Source:Corrosion Science
      Author(s): Rui-Qing Hou, Nico Scharnagl, Frank Feyerabend, Regine Willumeit-Römer
      Several typical organic components, l-ascorbic acid (l-AA), l-glutamine (l-Gln), l-alanyl-l-glutamine (l-Ala-l-Gln) and fetal bovine serum (FBS) were chosen to elucidate the effects of organic components on the degradation of pure Mg under cell culture conditions. The results revealed that the influence of organic components on the degradation of pure Mg is time-dependent and they play an important role in the formation of the degradation layer. The addition of organic components favors the precipitation of nesquehonite rather than hydromagnesite in the “outer” layer, while in the “inner” layer the organic components accelerates the formation of phosphate (Mg-PO4, Ca-P salts) during immersion.
      Graphical abstract image

      PubDate: 2017-12-27T12:01:31Z
       
  • The role of (FeCrSi)2(MoNb)-type Laves phase on the formation of Mn-rich
           protective oxide scale on ferritic stainless steel
    • Abstract: Publication date: Available online 20 December 2017
      Source:Corrosion Science
      Author(s): Harri Ali-Löytty, Markku Hannula, Timo Juuti, Yuran Niu, Alexei A. Zakharov, Mika Valden
      Microalloying of stainless steel with reactive elements increases oxidation resistance but makes the alloy prone to microstructural changes. XPS results reveal changes in the initial oxidation mechanism on Ti–Nb stabilized ferritic stainless steel (EN 1.4521) after 120 h heat treatment at 650 °C. Age-precipitation of (FeCrSi)2(MoNb)-type Laves phase resulted in less pronounced surface segregation and oxidation of microalloying elements. Si oxidizes preferentially at the Laves precipitate locations via outward diffusion forming diffusion barrier for the other scale forming elements. Most significantly the diffusion of Mn and the formation of low volatile (Mn,Cr)3O4 spinel oxide at the surface was strongly suppressed.
      Graphical abstract image

      PubDate: 2017-12-27T12:01:31Z
       
  • Characterization of a new efflorescence salt on calcareous historic
           objects stored in wood cabinets: Ca2(CH3COO)(HCOO)(NO3)2·4H2O
    • Abstract: Publication date: Available online 20 December 2017
      Source:Corrosion Science
      Author(s): Sebastian Bette, Gerhard Eggert, Andrea Fischer, Jörg Stelzner, Robert E. Dinnebier
      White efflorescence crystals grown on the surfaces of a bronze bowl, classical ceramic and ancient wine jugs were investigated. X-ray powder diffraction (XRPD) revealed that in each case an identical, hitherto unknown phase was formed. The crystal structure was solved from high resolution XRPD measurements and revealed a phase composition of Ca2(CH3COO)(HCOO)(NO3)2·4H2O, which is in accordance with the complementary analysis. The overall structural motif of Ca2(CH3COO)(HCOO)(NO3)2·4H2O, one dimensional calcium carboxylate zig zag chains in which acetate and formate ions are arranged in an alternating fashion, is closely related to other naturally occurring or artificial efflorescence salts like thecotrichite or calclacite.
      Graphical abstract image

      PubDate: 2017-12-27T12:01:31Z
       
  • Characterization of refractory steel oxidation at high temperature
    • Abstract: Publication date: Available online 20 December 2017
      Source:Corrosion Science
      Author(s): Nicolas Madern, Judith Monnier, Rita Baddour-Hadjean, Antonin Steckmeyer, Jean-Marc Joubert
      The high temperature oxidation behavior of two highly alloyed refractory austenitic steels is studied at 1000 °C under air. Both short-term oxidation kinetics and long-term oxidation products are investigated. Structural, elemental and morphological analyses are coupled to characterize the oxide phases’ formation. Chromia and spinel are the main phases for both samples although they suffer important descaling after 4 weeks oxidation, but alloying elements are responsible for the formation of many other oxides. Microstructures are compared and discussed. New Raman spectra are reported for manganese chromite spinels. Their assignments are provided and discussed at the light of the proposed cationic distribution.

      PubDate: 2017-12-27T12:01:31Z
       
  • Effect of chloride and sulfate ions on crevice corrosion behavior of
           low-pressure steam turbine materials
    • Abstract: Publication date: Available online 20 December 2017
      Source:Corrosion Science
      Author(s): Li-Bin Niu, Koji Okano, Sakae Izumi, Kunio Shiokawa, Mitsuo Yamashita, Yoshihiro Sakai
      Crevice corrosion behavior between homogeneous and dissimilar materials of 13Cr and 3.5NiCrMoV steels was investigated in simulated boiler waters containing chloride ions (Cl−) and sulfate ions (SO4 2−), using open circuit potential (OCP) measurements in addition to morphology analysis. Pitting occurred inside the crevice not only on 13Cr steel but also on 3.5NiCrMoV steel in the test water containing 100 ppm Cl−, while it was suppressed by the coexistence of 50 ppm SO4 2− in the water with the 100 ppm Cl−. However, the presence of 50 ppm SO4 2− in the test waters promoted uniform corrosion on 3.5NiCrMoV steel inside the crevice.

      PubDate: 2017-12-27T12:01:31Z
       
  • Electrochemical Studies of Molten Sulfates in LiCl-KCl-Na2SO4 at
           700 °C
    • Abstract: Publication date: Available online 20 December 2017
      Source:Corrosion Science
      Author(s): Kuldeep Kumar, Nathan D. Smith, Timothy Lichtenstein, Hojong Kim
      The electrochemical reduction behavior of molten Na2SO4 was investigated at 700 °C in LiCl-KCl-Na2SO4 (5–15 mol%) electrolyte under two different gaseous atmospheres of inert argon and oxidizing O2-0.1% SO2. Sulfate ions (SO4 2–) were directly reduced into sulfur (S) and sulfide (S2–) ions at large negative overpotentials in both gaseous atmospheres. During the transition from inert to oxidizing atmosphere, open circuit potentials of a platinum electrode (vs. Ag/Ag+) were shifted in the positive direction by more than 0.60 V, implying the presence of stronger oxidants which can be coupled with the metal oxidation reactions during the hot corrosion processes.

      PubDate: 2017-12-27T12:01:31Z
       
  • Designing the Corrosion Products of ZnAl15: A new Approach to Smart
           Corrosion Protection Coatings'
    • Abstract: Publication date: Available online 20 December 2017
      Source:Corrosion Science
      Author(s): Kirsten Bobzin, Mehmet Öte, Martin Andreas Knoch
      ZnAl coatings are known to provide reliable corrosion protection for low grade structural steels in most environments. Depending on the coating process, different phase compositions can be observed in such coatings. In case of thermal spraying, the high cooling rates were proven to result in the formation of metastable β-ZnAl for the first time in literature. To assess the influence on the corrosion behaviour, β-ZnAl and α-η-ZnAl samples were produced and corroded in a salt spray test. A pronounced influence of the phase composition on the formation of layered double hydroxides was observed.

      PubDate: 2017-12-27T12:01:31Z
       
  • Experimental and boundary element method study on the effect of stress on
           
    • Abstract: Publication date: Available online 20 December 2017
      Source:Corrosion Science
      Author(s): Osamu Kuwazuru, Kazuhiro Ode, Makoto Yamada, Alain J. Kassab, Eduardo Divo
      The effect of stress on the polarization curve of high pressure die cast aluminum alloy in sodium chloride solution was evaluated by mechano-electrochemical experiments and boundary element electrostatics simulations. The polarization curve was measured under a constant stress condition, and a decrease in natural potential due to stress was observed. A periodic arrangement of intact and damage surfaces was assumed in the mechanically damaged oxide film, and the polarization curve of the damage surface was identified. The simulation results showed that the decrease in natural potential is explained by the nucleation of the damage surface by plastic strain.
      Graphical abstract image

      PubDate: 2017-12-27T12:01:31Z
       
  • Study of the inhibition ability of benzotriazole on the Zn-Mg coated steel
           corrosion in chloride electrolyte
    • Abstract: Publication date: Available online 20 December 2017
      Source:Corrosion Science
      Author(s): J. Rodriguez, M. Mouanga, A. Roobroeck, D. Cossement, A. Mirisola, M.-G. Olivier
      The corrosion inhibition of Zn-Mg coated steel by benzotriazole was investigated in sodium chloride solution. Electrochemical and analytical measurements combined with surface analyses indicate that benzotriazole inhibits the corrosion reactions by forming a complex between Zn2+ and the anionic form of benzotriazole BTA− present near the surface where pH increases due to Mg dissolution. The complex reinforces the corrosion product layer composed of zincite ZnO which precipitates on the surface. If a benzotriazole/chloride ions ratio of 1/100 is respected and if the presence of the inhibitor is always maintained in the chloride medium, a sustainable barrier layer is assured.

      PubDate: 2017-12-27T12:01:31Z
       
  • Electrochemical behavior of Inconel 718 fabricated by laser solid forming
           on different sections
    • Abstract: Publication date: Available online 20 December 2017
      Source:Corrosion Science
      Author(s): Pengfei Guo, Xin Lin, Jiaqiang Li, Yufeng Zhang, Menghua Song, Weidong Huang
      Microstructural analysis and electrochemical behavior of Inconel 718 fabricated by laser solid forming on horizontal section (HS) and vertical section (VS) were investigated. The electrochemical results show that the corrosion resistance on HS and VS have no difference in 10 wt.% NaNO3 solution. However, HS possesses lower surface products resistance at low current densities due to the tube-like distribution of secondary phases. Besides, their higher current efficiencies at low current densities are mainly attributed to the undissolved phases being flushed away by the flowing electrolyte. The fast detachment rates of secondary phases at high current densities improve the surface quality.
      Graphical abstract image

      PubDate: 2017-12-27T12:01:31Z
       
  • Determination of the equivalent hydrogen fugacity during electrochemical
           charging of 3.5NiCrMoV steel
    • Abstract: Publication date: Available online 20 December 2017
      Source:Corrosion Science
      Author(s): Jeffrey Venezuela, Clotario Tapia-Bastidas, Qingjun Zhou, Tom Depover, Kim Verbeken, Evan Gray, Qinglong Liu, Qian Liu, Mingxing Zhang, Andrej Atrens
      A new thermal desorption spectroscopy (TDS) apparatus was used to identify the hydrogen trapping peaks, and to measure the hydrogen concentrations in 3.5NiCrMoV steel after hydrogen charging electrochemically, and in gaseous hydrogen. The hydrogen concentration increased with (i) increasingly negative charging potential and (ii) increasing hydrogen gas pressure. The equivalent hydrogen fugacity versus charging overpotential was derived. There was a difference in the diffusible hydrogen traps activated during electrochemical and gas phase charging, attributed to the difference in the hydrogen fugacity. A two-site model for Sieverts’ Law explained the positive Y-intercept, as the density of already filled hydrogen traps.

      PubDate: 2017-12-27T12:01:31Z
       
  • Oxidation behavior of the B-modified silicide coating on Nb-Si based alloy
           at intermediate temperatures
    • Abstract: Publication date: Available online 19 December 2017
      Source:Corrosion Science
      Author(s): Wei Shao, Chungen Zhou
      A B-modified silicide coating on Nb-Si based alloy was prepared by the method of pack cementation. The oxidation resistance of the B-modified silicide coating was studied in the pest-oxidation temperature range (from 650 °C to 850 °C). Oxidation experiments show that the samples coated with B-modified silicide coating maintain low-rate oxidation and suffer from no pest oxidation at all experimental temperatures. The preferential oxidation of Ti and Si can suppress the formation of Nb2O5. Besides, the borosilicate scale with high fluidity can seal the cracks and pores in the scale. Thus, the occurrence of pest catastrophe is avoided.
      Graphical abstract image

      PubDate: 2017-12-27T12:01:31Z
       
  • Effects of environmental factors on stress corrosion cracking of
           cold-drawn high-carbon steel wires
    • Abstract: Publication date: Available online 18 December 2017
      Source:Corrosion Science
      Author(s): Saisai Wu, Honghao Chen, Hamed Lamei Ramandi, Paul C. Hagan, Alan Crosky, Serkan Saydam
      Premature failure of cable bolts due to stress corrosion cracking (SCC) is a phenomenon that has reported to occur in underground environments. This paper presents an experimental study to determine the impacts of environmental factors on SCC in high-carbon steel cable bolts used in ground support system. The service life of the wire strands was measured under a range of accelerated SCC conditions using three- and four-point loading jigs. Fractographic analyses of the fracture surfaces of the failed wires displayed typical features indicating that hydrogen embrittlement was involved in SCC in these tests. It was shown that the presence of hydrogen sulphide is more critical than its concentration in SCC. The pH and level of applied stress were determined to have a direct impact on the occurrence of SCC. The deflection angle of the crack path was observed to be an inverse polynomial function of the applied stress level in the wire. This demonstrated the significance of the stress level on the fracture mechanism of cable bolts. Furthermore, the use of a protective galvanised coating on cable bolts was found to be a promising countermeasure against SCC. The results of this study provide detailed insight into the environmental factors involved in SCC of high-carbon steel wires and can be further used for setting guidelines for assessment of environments which cause susceptibility to SCC.

      PubDate: 2017-12-27T12:01:31Z
       
  • Synergistic effect of B and Y on the isothermal oxidation behavior of
           TiAl-Nb-Cr-V alloy
    • Abstract: Publication date: Available online 16 December 2017
      Source:Corrosion Science
      Author(s): X. Gong, R.R. Chen, H.Z. Fang, H.S. Ding, J.J. Guo, Y.Q. Su, H.Z. Fu
      Isothermal oxidation was conducted at 900 °C to investigate the synergistic effect of B and Y on the oxidation behavior of Ti44Al6Nb1Cr2 V alloy. The results indicated that Ti44Al6Nb1Cr2V0.15Y0.1 B possessed superior oxidation resistance. B and Y refined the crystalline particles size and reduced the oxygen activity. As a results, the formation of TiO2 and vanadium oxides was suppressed. The reduction of dissolved oxygen in the alloy promoted the selective oxidation of Al. Meanwhile, oxide pegs were formed at the interface of oxide scale and Ti44Al6Nb1Cr2V0.15Y0.1 B alloy. Therefore, the spalling resistance of the oxide scale was enhanced by adding B and Y.

      PubDate: 2017-12-27T12:01:31Z
       
  • Correlation of microstructure and stress corrosion cracking initiation
           behaviour of the fusion boundary region in a SA508 Cl. 3-Alloy 52M
           dissimilar weld joint in primary pressurized water reactor environment
    • Abstract: Publication date: Available online 15 December 2017
      Source:Corrosion Science
      Author(s): Lijin Dong, Qunjia Peng, He Xue, En-Hou Han, Wei Ke, Lei Wang
      Correlation of microstructure and stress corrosion cracking (SCC) initiation behaviour of the fusion boundary (FB) region in a SA508 Cl. 3-Alloy 52M weld joint in primary pressurized water reactor environment was investigated. Cr-depletion at the grain boundary and strength mismatch in the FB region are the two causes for SCC initiation in the FB region. The partially mixed zone between the dilution zone (DZ) of Alloy 52M and SA508 Cl. 3 has a retardation effect on SCC initiation. This is attributed to the decrease of strength mismatch and the alleviation of strain concentration adjacent to the grain boundary in DZ.

      PubDate: 2017-12-27T12:01:31Z
       
  • Influence of tempering treatment on microstructure and pitting corrosion
           of 13 wt.% Cr martensitic stainless steel
    • Abstract: Publication date: Available online 14 December 2017
      Source:Corrosion Science
      Author(s): Sunil Kumar Bonagani, Vishwanadh Bathula, Vivekanand Kain
      Tempering of 13 wt.% Cr martensitic stainless steel resulted in nano-sized M3C carbides at 300 °C, nano-sized Cr-rich M23C6 carbides at 550 °C and sub-micron sized Cr-rich M23C6 carbides at 700 °C. Austenitization resulted in lath martensite with undissolved M23C6 carbides. Pitting resistance for tempered condition was lower than the austenitized condition with least resistance at 550 °C. The observation was attributed to the presence of a Fe-rich surface film and massive carbide precipitation with a Cr depletion zone of 7–9 nm at carbide interface for 550 °C tempered condition as opposed to a Cr-enriched passive film for the austenitized condition.

      PubDate: 2017-12-27T12:01:31Z
       
  • Effect of small concentrations of gallium and lead on anodic activation of
           aluminium in chloride solution
    • Abstract: Publication date: Available online 13 December 2017
      Source:Corrosion Science
      Author(s): Esma Senel, Kemal Nisancioglu
      The presents objective is to investigate the combined effect of alloyed Pb and Ga on surface segregation by heat treatment and ensuing anodic activation of aluminium in chloride solution. Model alloys containing Pb and Ga, which were heat treated in the range 300–600 °C, were characterized electrochemically in 5% NaCl solution. Annealing at 600 °C resulted in significant segregation of Pb causing limited activation, while Ga remained in solid solution. The presence 50 ppm Ga had only a small contribution to activation, while 1000 ppm Ga contributed significantly by becoming enriched at areas around Pb segregations and spreading radially by dealloying.

      PubDate: 2017-12-27T12:01:31Z
       
  • IFC - Editorial Board
    • Abstract: Publication date: January 2018
      Source:Corrosion Science, Volume 130


      PubDate: 2017-12-13T08:42:33Z
       
  • Effects of biogenic H2S on the microbiologically influenced corrosion of
           C1018 carbon steel by sulfate reducing Desulfovibrio vulgaris biofilm
    • Abstract: Publication date: January 2018
      Source:Corrosion Science, Volume 130
      Author(s): Ru Jia, Jie Long Tan, Peng Jin, Daniel John Blackwood, Dake Xu, Tingyue Gu
      The role of biogenic H2S in the microbiologically influenced corrosion (MIC) of carbon steel was investigated. Desulfovibrio vulgaris (ATCC 7757), a sulfate reducing bacterium, was tested against C1018 carbon steel in anaerobic vials with three different sizes, each filled with 40mL of ATCC 1249 culture medium, providing headspace volumes of 10mL, 85mL and 160mL, respectively for H2S to escape. Results showed that a larger headspace led to a lower H2S concentration in the culture medium, and this increased the sessile cell count and made the iron sulfide film thinner, resulting in increased MIC.

      PubDate: 2017-12-13T08:42:33Z
       
  • Study of stainless steels corrosion in a strong acid mixture. Part 2:
           anodic selective dissolution, weight loss and electrochemical impedance
           spectroscopy tests
    • Abstract: Publication date: January 2018
      Source:Corrosion Science, Volume 130
      Author(s): Tiziano Bellezze, Giampaolo Giuliani, Annamaria Viceré, Gabriella Roventi
      The corrosion resistance of austenitic stainless steels AISI 316L, AISI 904L and Sanicro 28 and duplex stainless steels SAF 2205, SAF 2507 and SAF 2707, was studied at 40 and 60°C in a strong acid mixture containing tartaric acid saturated solution, H2SO4 and HCl. Anodic selective dissolution, weight loss and electrochemical impedance tests were performed. The results show that all stainless steels corrode actively and the micro-galvanic coupling, present on duplex stainless steels and 316L, determines severe selective corrosion and impairs their tendency to passivate. 904L and Sanicro 28 showed this tendency and the lowest corrosion rates.

      PubDate: 2017-12-13T08:42:33Z
       
  • Effect of brief thermal aging on stress corrosion cracking susceptibility
           of LDSS 2101 in the presence of chloride and thiosulphate ions
    • Abstract: Publication date: January 2018
      Source:Corrosion Science, Volume 130
      Author(s): F. Zanotto, V. Grassi, A. Balbo, C. Monticelli, C. Melandri, F. Zucchi
      In this paper, the effect of brief aging within the 650–850°C temperature range on the resistance of lean duplex stainless steel (LDSS) 2101 to stress corrosion cracking (SCC) was discussed. The thermal aging induced a decrease in Vickers microhardness and an increase in alloy ductility. This behaviour was connected to depletion of interstitial nitrogen in austenite. LDSS 2101 was found to suffer SCC in NACE TM-0177 solution, particularly under specific thermal aging and in the presence of thiosulphate ions (S2O3 2−) at 10−4 and 10−3 M. Crack nucleation and propagation were linked to microstructural variations connected to thermal aging.

      PubDate: 2017-12-13T08:42:33Z
       
  • Comprehensive electrochemical study on corrosion performance of graphene
           coatings deposited by chemical vapour deposition at atmospheric pressure
           on platinum-coated molybdenum foil
    • Abstract: Publication date: January 2018
      Source:Corrosion Science, Volume 130
      Author(s): Samira Naghdi, Katarina Nešović, Vesna Mišković-Stanković, Kyong Yop Rhee
      In this work, we present the results of electrochemical, Raman, FE-SEM/EDS, and XPS studies of graphene coatings deposited by chemical vapour deposition at atmospheric pressure on Mo foil and Pt-coated Mo foil as catalysts. The results showed that the graphene coating synthesized on Pt-coated molybdenum foil was bi-layer and had fewer defects, while the graphene coating on Mo foil was few-layer with more defects. The corrosion studies indicated that both graphene coatings on bare Mo and Pt-coated Mo exhibited good protective properties and can act as a barrier against corrosion in 0.1M NaCl.
      Graphical abstract image

      PubDate: 2017-12-13T08:42:33Z
       
  • Suppression of Cr evaporation by Co electroplating and underlying Cr
           retention mechanisms for the 22wt.% Cr containing ferritic stainless steel
           
    • Abstract: Publication date: January 2018
      Source:Corrosion Science, Volume 130
      Author(s): Byung Kyu Kim, Dong-Ik Kim, Kyung-Woo Yi
      High temperature oxidation behavior and associated Cr evaporation process of Co electrodeposited 22wt.% Cr containing ferritic stainless steel designed for the SOFC interconnects was investigated using XRD and post-processed TEM compositional analysis. The electrodeposited Co layer with a thickness of 400nm lead to a tenfold reduction in the Cr evaporation. This results from not only the prevention of direct exposure of Cr2O3 to the air by Co spinel oxide formation but also the suspension of Cr transport through oxide grain boundaries due to the phase transformation of Co oxide from Co3O4 to MnxCo3-xO4.
      Graphical abstract image

      PubDate: 2017-12-13T08:42:33Z
       
  • Smart coating based on double stimuli-responsive microcapsules containing
           linseed oil and benzotriazole for active corrosion protection
    • Abstract: Publication date: January 2018
      Source:Corrosion Science, Volume 130
      Author(s): Débora Abrantes Leal, Izabel Cristina Riegel-Vidotti, Mário Guerreiro Silva Ferreira, Cláudia Eliana Bruno Marino
      Microcapsules containing linseed oil were synthesized by in situ polymerization method and benzotriazole was entrapped between polyelectrolytes layers assembled outside the microcapsules, using the Layer-by-Layer technique. The prepared microcapsules presented mean number diameter of 2.08μm and released greater amount of benzotriazole in slightly acidic NaCl solution. The corrosion protection effect of the microcapsules was evaluated using a carbon steel substrate coated with an epoxy resin loaded with the microcapsules (4.8wt%). Electrochemical impedance spectroscopy demonstrated the best performance of the loaded coating when compared to a control due to the stimuli-responsive release of linseed oil and benzotriazole.
      Graphical abstract image

      PubDate: 2017-12-13T08:42:33Z
       
  • Corrosion behaviour of a quenched and partitioned medium carbon steel in
           3.5wt.% NaCl solution
    • Abstract: Publication date: January 2018
      Source:Corrosion Science, Volume 130
      Author(s): Jilan Yang, Yufei Lu, Zhenghong Guo, Jianfeng Gu, Caixiang Gu
      In this work, the corrosion characteristics of a quenched and partitioned (Q&P) medium carbon steel in a 3.5wt.% NaCl solution were investigated by various surface analysis techniques and then compared with those of the quenched and tempered steel with the same composition. Both steels exhibited nearly identical corrosion variation trends. However, the Q&P specimen demonstrated a lower corrosion rate. The formation of retained austenite in the carbon-enriched state increases the corrosion potential of the carbon-depleted martensitic matrix and decreases the residual tensile stress on the Q&P surface, thus enhancing its corrosion resistance.

      PubDate: 2017-12-13T08:42:33Z
       
  • Corrosion of mild steel at the seawater/sediments interface: Mechanisms
           and kinetics
    • Abstract: Publication date: January 2018
      Source:Corrosion Science, Volume 130
      Author(s): Ph. Refait, A.-M. Grolleau, M. Jeannin, E. François, R. Sabot
      Corrosion product layers formed on mild steel coupons after 6 years of permanent immersion at shallow depth in marine sediments were characterized by X-ray diffraction and μ-Raman spectroscopy. They proved mainly composed of FeS which testifies for an intense sulfate-reducing bacteria activity. Other identified compounds were siderite FeCO3 and four varieties of green rust associated with local variations of composition of the environment. The corrosion rates determined by residual thickness measurements were higher on the lower half of the coupons (average 40μm/yr, local maximum 140μm/yr) and smaller on the upper half, suggesting that differential aeration effects took place.

      PubDate: 2017-12-13T08:42:33Z
       
  • Fabrication and corrosion resistance of a graphene-tin oxide composite
           film on aluminium alloy 6061
    • Abstract: Publication date: January 2018
      Source:Corrosion Science, Volume 130
      Author(s): Linghui Yang, Yunxiao Wan, Zhenlan Qin, Qunjie Xu, Yulin Min
      The synthesis of a graphene-tin oxide composite film prepared on aluminium alloy 6061 by self-assembly and hydrothermal methods is reported. The surface morphology of the film was investigated using field-emission scanning electron microscopy. The composition and microstructure were investigated using X-ray diffraction, Raman spectroscopy and X-ray photoelectron spectroscopy. The corrosion behaviour of the film was studied using an electrochemical method in a mixed acidic solution of 0.5M H2SO4 and 2ppm HF. The resulting protection efficiency was up to 99.7%, illustrating that the film can immensely improve the corrosion of this alloy in a heavily acidic environment.

      PubDate: 2017-12-13T08:42:33Z
       
  • Durability improving and corrosion-resistance mechanism of graphene oxide
           modified ultra-thin carbon paper used in PEM fuel cell
    • Abstract: Publication date: January 2018
      Source:Corrosion Science, Volume 130
      Author(s): Piaopiao Yang, Xiaobo Wu, Zhiyong Xie, Pan Wang, Chunbo Liu, Qizhong Huang
      The corrosion-resistance properties of modified ultra-thin carbon paper (CP) different graphene oxide (GO) content used in proton exchange membrane fuel cells (PEMFC) are studied for the first time. Results show that CP with 1wt% GO has distinguished corrosion-resistance property (corrosion current: 5.539E−8A.cm−2, minimum weight loss and contact angle variation). And mechanism analysis was found that the CP-1GO-P had uniform florine coating on some area of carbon fiber while T-CP-P has little. Moreover, the addition of GO could introduce more CO and CO groups which interact with the florine atom, thus can strengthen the bonding of PTFE and matrix carbon effectively.

      PubDate: 2017-12-13T08:42:33Z
       
  • Corrosion behaviour of electrodeposited nanocrystalline nickel-iron (NiFe)
           alloys in dilute H2SO4
    • Abstract: Publication date: January 2018
      Source:Corrosion Science, Volume 130
      Author(s): Leo Monaco, Gordana Avramovic-Cingara, Gino Palumbo, Uwe Erb
      Electrodeposited nanocrystalline and conventional polycrystalline NiFe alloys of similar iron content were investigated to understand the effect of grain size on the corrosion behaviour of these materials. Potentiodynamic polarization testing in 1N H2SO4 revealed similar active-passive-transpassive behaviour with negligible differences in the Tafel and transpassive regions regardless of grain size. It is shown that differences in the region of active dissolution are the result of strong contributions of sulfur impurities in the nanocrystalline electrodeposits rather than being due to grain size alone.
      Graphical abstract image

      PubDate: 2017-12-13T08:42:33Z
       
  • Study of stainless steels corrosion in a strong acid mixture. Part 1:
           cyclic potentiodynamic polarization curves examined by means of an
           analytical method
    • Abstract: Publication date: January 2018
      Source:Corrosion Science, Volume 130
      Author(s): Tiziano Bellezze, Giampaolo Giuliani, Gabriella Roventi
      The corrosion resistance of AISI 316L, AISI 904L, Sanicro 28, SAF 2205, SAF 2507 and SAF 2707 was studied in an acid mixture containing tartaric acid saturated solution, H2SO4 and HCl, as a function of temperature (22–60°C) and alloys composition. The stainless steels were examined through anodic polarization curves; an analytical method is proposed to obtain the characteristic parameters from these curves. The results indicate that Cr and Mo play the most important role on the active-passive transition of the tested alloys. AISI 904L, Sanicro 28 and SAF 2707 showed the best anodic characteristics among the examined stainless steels.

      PubDate: 2017-12-13T08:42:33Z
       
  • Oxidation of TbFe2: Microstructure of oxide-film by both theory and
           experiment
    • Abstract: Publication date: January 2018
      Source:Corrosion Science, Volume 130
      Author(s): Krishna Manwani, Arout J. Chelvane, Emila Panda
      TbFe2 owing to its highest magnetostriction finds significant application in defence. However, its quality degradation due to oxidation poses an enormous challenge for being scaled up in a device. To this end, a detailed study by means of both the theory and experiment is performed here to understand the oxide-film overgrowth due to dry, thermal oxidation of TbFe2. Then these results are discussed and compared, which is found to be in agreement with each other. Understanding developed in this study would help in tuning the substrate constituents for higher temperature application, where oxidation of the substrate is a major concern.
      Graphical abstract image

      PubDate: 2017-12-13T08:42:33Z
       
  • Saltwater corrosion behavior of cold sprayed AA7075 aluminum alloy
           coatings
    • Abstract: Publication date: January 2018
      Source:Corrosion Science, Volume 130
      Author(s): Sieglind Ngai, Tungwai Ngai, Florian Vogel, William Story, Gregory B. Thompson, Luke N. Brewer
      Salt water corrosion behavior of cold sprayed AA7075 is examined. Coatings on AA7075-T651 substrates were prepared by cold spraying AA7075 powder using He and N2 as carrier gases. Severe plastic deformation is only observed in the helium sprayed samples. Electrochemical experiments performed on the coatings reveal inferior corrosion resistance of the nitrogen sprayed samples, although both coatings exhibit lesser corrosion resistance than the AA7075-T651 substrate. The localized corrosion response is qualitatively different between the three materials with large scale pitting in the plate material, limited pitting in the helium sprayed material, and microscale crevice corrosion in the nitrogen sprayed material.

      PubDate: 2017-12-13T08:42:33Z
       
  • Effect of CrF3 on the corrosion behaviour of Hastelloy-N and 316L
           stainless steel alloys in FLiNaK molten salt
    • Abstract: Publication date: Available online 12 December 2017
      Source:Corrosion Science
      Author(s): Huiqin Yin, Jie Qiu, Huajian Liu, Wenguan Liu, Yang Wang, Zejie Fei, Sufang Zhao, Xuehui An, Jinhui Cheng, Tao Chen, Peng Zhang, Guojun Yu, Leidong Xie
      The effect of CrF3 on the corrosion behaviour of Hastelloy-N and 316L austenitic stainless steel alloys in FLiNaK at 700°C was investigated using synchrotron radiation and other characterisation techniques. The results showed that CrF3 considerably accelerated the corrosion of both tested alloys by promoting the dissolution of Cr, Fe, and Mn from alloy matrices into molten salt. The 316L stainless steel alloys mainly exhibited intergranular corrosion, whereas the Hastelloy-N alloys tended to exhibit intergranular and pitting corrosion. After corrosion, the lattice parameter of both alloys decreased and Cr1.07Fe18.93 was formed on the surface of the 316L stainless steel alloys.

      PubDate: 2017-12-13T08:42:33Z
       
  • Characterization of oxide scales formed on alloy 82 in nominal PWR primary
           water at 340°C and in hydrogenated steam at 400°C
    • Abstract: Publication date: Available online 12 December 2017
      Source:Corrosion Science
      Author(s): C. Duhamel, M. Sennour, F. Georgi, C. Guerre, E. Chaumun, J. Crépin, E. Héripré, I. de Curières
      Alloy 82, used as weld metal in Pressurized Water Reactor (PWR), was exposed to hydrogenated steam at 400°C and to simulated primary water at 340°C. A comparative study of the oxide layer formed on the alloy surface in both environments was performed to confirm that steam conditions were representative of accelerated primary water conditions. For this purpose, the oxidation products were investigated at a nanometer scale using Scanning Electron Microscopy (SEM), X-ray Photoelectron Spectrometry (XPS) and Transmission Electron Microscopy (TEM). Results obtained in both conditions are compared and the influences of heat treatment, test duration and surface preparation are studied.

      PubDate: 2017-12-13T08:42:33Z
       
  • Corrosion of antibacterial Cu-bearing 316L stainless steels in the
           presence of sulfate reducing bacteria
    • Abstract: Publication date: Available online 12 December 2017
      Source:Corrosion Science
      Author(s): Hongwei Liu, Dake Xu, Ke Yang, Hongfang Liu, Y. Frank Cheng
      Corrosion of two types of antibacterial Cu-bearing 316L stainless steel was investigated in a medium containing sulfate reducing bacteria (SRB) by various surface characterization and electrochemical measurements. The addition of Cu does not improve the resistance of 316L stainless steel to microbiologically influenced corrosion. The anticorrosion performance of 316L-Cu-A is better than 316L-Cu-B, which is believed to be associated with the addition of elements La and Ce, rather than Cu, in the steel. The Cu ions react with sulfides produced by SRB to produce copper sulfide on the steel surface, increasing corrosion of the Cu-bearing stainless steels.

      PubDate: 2017-12-13T08:42:33Z
       
  • High temperature treatment of Cr3C2@SiC-NFA composites in water vapor
           environment
    • Abstract: Publication date: Available online 12 December 2017
      Source:Corrosion Science
      Author(s): Kaustubh Bawane, Kaijie Ning, Kathy Lu
      This work focuses on the oxidation resistance of a new class of composites, chromium carbide coated silicon carbide-nanostructured ferritic alloy (Cr3C2@SiC-NFA), in a water vapor containing atmosphere at 500–1000°C. Oxidation temperature effects on surface morphologies, scale characteristics, and cross-sectional microstructures are investigated and analyzed. The Cr3C2@SiC content in the composites is strongly associated with the oxidation resistance by forming a dense Cr- and Si-rich inner-layer, which can be explained based on the Thermo-Calc simulation. The fundamental understandings offer important guidance for the applications of this class of composites in nuclear reactors and high temperature moist environments.
      Graphical abstract image

      PubDate: 2017-12-13T08:42:33Z
       
  • Role of inclusions in the pitting initiation of pipeline steel and the
           effect of electron irradiation in SEM
    • Abstract: Publication date: Available online 10 November 2017
      Source:Corrosion Science
      Author(s): Yafei Wang, Guangxu Cheng, Wei Wu, Yun Li
      The role of inclusions in the initiation of corrosion pits for a high strength pipeline steel in NaCl solution was investigated. The inclusions with typical compositions of Al-Mg-Ca-S-O were found typically spherical and responsible for the initiation of circular corrosion pits. The possible formation mechanism of the spherical inclusions and their role in the initiation of pitting corrosion are discussed. The electron irradiation in scanning electron microscopy, including the morphology observation and energy-dispersive X-ray spectroscopy test, was found to have significant influence on the pitting susceptibility around the inclusions.

      PubDate: 2017-11-16T13:09:55Z
       
  • Effects of Si, Al and Ti on corrosion of Ni-20Cr and Ni-30Cr alloys in
           Ar-20CO2 at 700°C
    • Abstract: Publication date: Available online 10 November 2017
      Source:Corrosion Science
      Author(s): Thuan Dinh Nguyen, Jianqiang Zhang, David J. Young
      Model alloys Ni-(20, 30)Cr (wt.%) with (0.1, 1)% Si, 1.5% Al or (1, 2)% Ti were exposed to Ar-20CO2 at 700°C. Samples were electropolished before reaction to avoid cold working effects on alloy diffusion. The Ni-20Cr alloy formed a thick NiO scale and an internal oxidation zone, whereas Ni-30Cr formed a duplex scale of NiO and Cr2O3 layers. The Si and Al additions increased the oxidation resistance by forming additional protective layers of SiO2 or Al2O3. Titanium accelerated chromia growth, promoting alloy surface coverage with protective oxide. All alloys formed intergranular Cr-rich carbide precipitates beneath their scales.

      PubDate: 2017-11-16T13:09:55Z
       
  • Benzotriazole and cerium chloride as corrosion inhibitors for AA2024-T3:
           An EIS investigation supported by SVET and ToF-SIMS analysis
    • Abstract: Publication date: Available online 10 November 2017
      Source:Corrosion Science
      Author(s): L.B. Coelho, D. Cossement, M.-G. Olivier
      The inhibitive effects provided by benzotriazole (BTA) and cerium chloride (CeCl3) on 2024-T3 aluminium alloy were assessed, individually and combined, in 0.05M NaCl electrolytes, by means of Electrochemical Impedance Spectroscopy (EIS). From the analysis of impedance fitted parameters, a synergistic effect appears to exist between both inhibitors until 14days of immersion. The Scanning Vibrating Electrode Technique (SVET) was applied to an Al/Cu galvanic coupling model in order to better comprehend the observed inhibitive actions. Additionally, Time of Flight Secondary Ion Mass Spectrometry (ToF-SIMS) was employed to evaluate the in-depth distribution of species related to the inhibitive film/alloy interface.
      Graphical abstract image

      PubDate: 2017-11-16T13:09:55Z
       
  • Localized corrosion behaviour of AA7150 after ultrasonic shot peening:
           Corrosion depth vs. impact energy
    • Abstract: Publication date: Available online 10 November 2017
      Source:Corrosion Science
      Author(s): Qingqing Sun, Qingyou Han, Rong Xu, Kejie Zhao, Jie Li
      The effect of impact energy on localized corrosion behaviour of ultrasonic shot peened AA 7150 was systematically studied by manipulating peening parameters such as peening duration, peening amplitude, peening distance and peening media size. Needle-like pits with depths deeper than that of the untreated alloy were observed on low energy peened samples. However, localized corrosion was eliminated for high energy peened alloys. The formation of equiaxed nanograins on surface layer significantly enhanced pit initiation resistance but accelerated propagation kinetics. Galvanic interaction between surface layer and substrate alloy caused by surface segregation was also discussed.
      Graphical abstract image

      PubDate: 2017-11-16T13:09:55Z
       
  • Factors affecting isothermal oxidation of pure chromium in air
    • Abstract: Publication date: Available online 10 November 2017
      Source:Corrosion Science
      Author(s): Ali S. Dorcheh, Michael Schütze, Mathias C. Galetz
      Isothermal oxidation kinetics of pure chromium at 950–1200°C in purely oxidizing (Ar-20%O2), purely nitriding (N2-5%H2), and oxidizing-nitriding (synthetic air, N2-20%O2) atmospheres were studied. Effects of factors such as oxide volatilization, multiple mass-gains, and nitridation on oxidation kinetics of chromium were investigated using thermal analysis, acoustic emission analysis, and electron microscopy. Results obtained in single oxidant atmospheres compared to those obtained in air clearly showed the transparency of chromia against nitrogen in air. The abrupt mass gain steps observed during isothermal oxidation were appeared due to the local oxide scale failure resulting from growth stresses in the thermally grown chromia scale.

      PubDate: 2017-11-16T13:09:55Z
       
  • Fabrication of surface-porous Mg–Al alloys with different
           microstructures in a neutral aqueous solution
    • Abstract: Publication date: Available online 9 November 2017
      Source:Corrosion Science
      Author(s): Feng Yang, Ze-ying Yan, Ying-hui Wei, Yong-gang Li, Huan Wei, Li-feng Hou
      Surface-porous Mg–Al alloys with different microstructures were fabricated via a new method of electrochemical dealloying in a neutral 0.6M NaCl solution. A bimodal porous structure with 47.57±11.43μm large pores and 265.60±78.68nm honeycomb-like fine pores was obtained by direct electrochemical dealloying of as-cast Mg80Al20 alloy. Following annealing, the eutectic structure disappeared and a bicontinuous, single-sized, porous structure with 7.10±1.96μm ligaments was created by an annealing-electrochemical dealloying approach. The porous formation mechanism is governed by selective dissolution of the α-Mg phase, which leaves the Mg17Al12 phase as the porous layer framework.
      Graphical abstract image

      PubDate: 2017-11-16T13:09:55Z
       
  • Investigating the effect of Cu-rich phase on the corrosion behavior of
           Super 304H austenitic stainless steel by TEM
    • Abstract: Publication date: Available online 9 November 2017
      Source:Corrosion Science
      Author(s): X.Y. San, B. Zhang, B. Wu, X.X. Wei, E.E. Oguzie, X.L. Ma
      The precipitation of a fine Cu-rich phase dispersedly distributed in the austenitic matrix can impart the novel properties of Super 304H SS. However, the contributions have not been well understood due to the difficulty encountered in obtaining precise experimental information on the corrosion events introduced by the nano-sized Cu-rich precipitates. In this work, we have applied TEM and clarified the dissolution occurred in Cu-rich phase and the dissolution-induced evolution in structure and chemistry on the surface. This work enabled us glean atomic scale insights on the effect of the Cu-rich phase on the corrosion behavior of the Super 304H SS.

      PubDate: 2017-11-16T13:09:55Z
       
  • Coupling of electrochemical, electrogravimetric and surface analysis
           
    • Abstract: Publication date: Available online 8 November 2017
      Source:Corrosion Science
      Author(s): W. Qafsaoui, A. Et Taouil, M.W. Kendig, H. Cachet, S. Joiret, H. Perrot, H. Takenouti
      Interaction between ammonium pyrrolidinedithiocarbamate (PDTC) and bronze in 30gL−1 NaCl was investigated at several concentrations between 0.1 and 10mM by means of various electrochemical and spectroscopic techniques. Electrochemical measurements revealed a fast adsorption process of PDTC on Cu and Pb and the formation of a thick insulating and protective film with a high surface coverage. At high concentrations, PDTC prevents oxides formation. Surface analyses confirm PDTC adsorption on bronze mainly via interaction between sulphur atoms and Cu sites to form CuI-PDTC complex.

      PubDate: 2017-11-16T13:09:55Z
       
  • Synergistic effects of fluoride and chloride on general corrosion behavior
           of AISI 316 stainless steel and pure titanium in H2SO4 solutions
    • Abstract: Publication date: Available online 8 November 2017
      Source:Corrosion Science
      Author(s): Z.B. Wang, H.X. Hu, Y.G. Zheng
      The general corrosion behavior of AISI 316 stainless steel (316 SS) and pure titanium (pure Ti) in H2SO4 solutions containing fluoride (F−) and chloride (Cl−) ions was evaluated quantitatively using potentiodynamic polarization tests. The general corrosion resistance of these two materials to F− and Cl− is compared and explained by the proposed mechanisms based on XPS analyses. Furthermore, F− and Cl− are found to have synergistic effects on the general corrosion behavior of these two materials, which are attributed to the effects of F− and Cl− on the penetration of each other into the film.

      PubDate: 2017-11-16T13:09:55Z
       
  • Failure mechanism transition of hydrogen embrittlement in AISI 304 K-TIG
           weld metal under tensile loading
    • Abstract: Publication date: Available online 8 November 2017
      Source:Corrosion Science
      Author(s): Xiaogang Li, Baoming Gong, Caiyan Deng, Yizhe Li
      The effect of hydrogen on the tensile properties of AISI 304 K-TIG weld metal is investigated in this study. Fractographic analysis demonstrates a transition from quasi-cleavage/cleavage fracture to intergranular fracture in the brittle zone as the hydrogen-charging current density increases, which is attributed to the interplay of crystalline defect, hydrogen atoms, and α′ martensite transformation sites. It is believed that at low current density, α′ martensite nucleates and grows homogeneously in the interior of the grain. At high current density, the stress-induced α′ martensite forms preferentially at the grain boundary, which undergoes severe strain localisation and hydrogen atom segregation.

      PubDate: 2017-11-08T17:20:58Z
       
  • The effect of cold rolling on grain boundary structure and stress
           corrosion cracking susceptibility of twins in alloy 690 in simulated PWR
           primary water environment
    • Abstract: Publication date: Available online 7 November 2017
      Source:Corrosion Science
      Author(s): Wenjun Kuang, Gary S. Was, Cody Miller, Mike Kaufman, Talukder Alam, Bharat Gwalani, Rajarshi Banerjee
      The effects of cold rolling on the structure and stress corrosion cracking (SCC) susceptibility of twin boundaries in alloy 690 were studied. Most of the twin boundaries were transformed into random high angle boundaries (RHABs) following cold rolling. The transformed twin boundaries (TTBs) showed increased susceptibility to carbide precipitation during subsequent aging at 475°C. The SCC initiation test in 360°C hydrogenated water indicated that the prior RHABs exhibited increased SCC susceptibility after cold rolling. Moreover, TTBs become susceptible to SCC due to the promoted outward diffusion of Cr and can enhance the connectivity of susceptible grain boundaries.

      PubDate: 2017-11-08T17:20:58Z
       
 
 
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