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  Subjects -> ENGINEERING (Total: 2282 journals)
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ENGINEERING (1204 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: 6)
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: 233)
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: 7)
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Advances in Science and Research (ASR)     Open Access   (Followers: 6)
Aerobiologia     Hybrid Journal   (Followers: 1)
African Journal of Science, Technology, Innovation and Development     Hybrid Journal   (Followers: 4)
AIChE Journal     Hybrid Journal   (Followers: 30)
Ain Shams Engineering Journal     Open Access   (Followers: 5)
Akademik Platform Mühendislik ve Fen Bilimleri Dergisi     Open Access  
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: 16)
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: 7)
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: 15)
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  
Applied Numerical Mathematics     Hybrid Journal   (Followers: 5)
Applied Physics Research     Open Access   (Followers: 3)
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Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 4)
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)
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: 8)
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: 4)
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: 3)
Bharatiya Vaigyanik evam Audyogik Anusandhan Patrika (BVAAP)     Open Access   (Followers: 1)
Biofuels Engineering     Open Access  
Biointerphases     Open Access   (Followers: 1)
Biomaterials Science     Full-text available via subscription   (Followers: 10)
Biomedical Engineering     Hybrid Journal   (Followers: 16)
Biomedical Engineering and Computational Biology     Open Access   (Followers: 13)
Biomedical Engineering Letters     Hybrid Journal   (Followers: 5)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 17)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 31)
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  
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: 3)
Bulletin of the Crimean Astrophysical Observatory     Hybrid Journal  
Cahiers, Droit, Sciences et Technologies     Open Access  
Calphad     Hybrid Journal  
Canadian Geotechnical Journal     Hybrid Journal   (Followers: 14)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 41)
Case Studies in Engineering Failure Analysis     Open Access   (Followers: 8)
Case Studies in Thermal Engineering     Open Access   (Followers: 3)
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: 6)
Catalysis Surveys from Asia     Hybrid Journal   (Followers: 3)
Catalysis Today     Hybrid Journal   (Followers: 8)
CEAS Space Journal     Hybrid Journal  
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: 21)
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: 3)
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: 13)
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: 26)
Composite Interfaces     Hybrid Journal   (Followers: 6)
Composite Structures     Hybrid Journal   (Followers: 258)
Composites Part A : Applied Science and Manufacturing     Hybrid Journal   (Followers: 181)
Composites Part B : Engineering     Hybrid Journal   (Followers: 237)
Composites Science and Technology     Hybrid Journal   (Followers: 216)
Comptes Rendus Mécanique     Full-text available via subscription   (Followers: 2)
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Computational Optimization and Applications     Hybrid Journal   (Followers: 7)
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Computers and Electronics in Agriculture     Hybrid Journal   (Followers: 4)
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Concurrent Engineering     Hybrid Journal   (Followers: 3)
Continuum Mechanics and Thermodynamics     Hybrid Journal   (Followers: 6)
Control and Dynamic Systems     Full-text available via subscription   (Followers: 9)
Control Engineering Practice     Hybrid Journal   (Followers: 42)
Control Theory and Informatics     Open Access   (Followers: 8)
Corrosion Science     Hybrid Journal   (Followers: 25)
CT&F Ciencia, Tecnologia y Futuro     Open Access  
CTheory     Open Access  
Current Applied Physics     Full-text available via subscription   (Followers: 4)
Current Science     Open Access   (Followers: 58)

        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  [3044 journals]
  • IFC - Editorial Board
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127


      PubDate: 2017-09-20T06:31:06Z
       
  • Microbiologically influenced corrosion of C1018 carbon steel by nitrate
           reducing Pseudomonas aeruginosa biofilm under organic carbon starvation
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Ru Jia, Dongqing Yang, Jin Xu, Dake Xu, Tingyue Gu
      This work showed that a wild-type Pseudomonas aeruginosa (PAO1) grown as a nitrate reducing bacterium biofilm on C1018 carbon steel was more corrosive under organic carbon source starvation. P. aeruginosa biofilms were pre-grown for 2days to achieve maturity before the culture media were changed to fresh culture media with 100% (as in the standard medium), 10%, and 0% organic carbons for subsequent 7-day incubation. Biofilms with 100%, 10%, and 0% organic carbons caused maximum pit depths of 5.4μm, 10.6μm, and 17.0μm, respectively. Weight loss, linear polarization resistance and electrochemical impedance spectroscopy data corroborated the pitting data.
      Graphical abstract image

      PubDate: 2017-09-20T06:31:06Z
       
  • Effect and role of alloyed Nb on the air oxidation behaviour of Ni-Cr-Fe
           alloys at 1000°C
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Ya-Xin Xu, Jin-Tao Lu, Xia-Wei Yang, Jing-Bo Yan, Wen-Ya Li
      Ni-25Cr alloys alloyed with Fe (5wt.% and 15wt.%) and Nb (0, 1 and 2wt.%) were designed and their oxidation behaviour was evaluated at 1000°C. Results reveal that alloyed Nb has a positive impact on oxidation in both the kinetics and oxide scale structures. The parabolic rate constant kp of Nb-alloyed Ni-25Cr-15Fe alloys are nearly one-fourth the value for Nb-free alloy. The oxide scales change from spinel-included multi-layers in the Nb-free alloy to a much thinner Cr2O3 single-layer in the Nb-alloyed alloys. NbC precipitates and slightly dissolved Nb account for these changes.

      PubDate: 2017-09-20T06:31:06Z
       
  • Identifying phases in protective scale formed during high temperature
           corrosion
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Monica M. Barney, B.P. Embaid, Andrew Nissan
      Identification of the layout of phases produced on silicon-containing steel exposed to heavy cuts of crude oil during high temperature refining service provides an indication of the inherent passivation available from the overall system and is a gauge of long term reliability. By characterizing the corrosion scale on a pipe corroding at negligible rates, we have identified the phases and their layout needed for adequate passivation, namely an appreciable content of the iron sulphide phase troilite in the bulk of the scale coupled with a compact and continuous layer of magnetite between the sulphide layer and the steel.

      PubDate: 2017-09-20T06:31:06Z
       
  • External α-Al2O3 scale on Ni-base alloy 602 CA – Part II:
           Microstructural evolution
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): R. Pillai, A. Chyrkin, T. Galiullin, E. Wessel, D. Grüner, W.J. Quadakkers
      The growth of protective α-Al2O3 scales on the NiCrAl-base alloy 602 CA at 1100°C and 1200°C was promoted by multi-step oxidation treatments. Different microstructural changes were observed during high temperature exposures in the pre-oxidised specimens as compared to the bare specimens. A coupled thermodynamic-kinetic model was employed to describe the influence of pre-oxidation on the microstructural evolution in the alloy. The model was able to correctly predict the mechanisms of the dissolution and re-precipitation of the carbides in the pre-oxidised and bare specimens.

      PubDate: 2017-09-20T06:31:06Z
       
  • Anisotropic pitting of single-phase β-Zr alloy and isotropic pitting of
           α+β double-phase Zr alloy
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Chaoqun Xia, Zhihao Feng, Shuguang Liu, Xing Zhang, Bing Zhang, Bo Pan, Xinyu Zhang, Mingzhen Ma, Riping Liu
      Pitting corrosion behaviour of Zr-40Ti-5Al–4V alloys with different phase composition was investigated. Pitting of the single-phase β-Zr alloy is crystallographic and the corrosion pits exhibit different orientation, which is mainly attributed to the favored dissolution kinetics of the {001} plane in body-centered cubic β grains. In contrast, isotropic and circular shaped pitting, due to the evenly distributed α and β phases, was observed in Zr alloy containing α+β double-phase. In addition, weight loss and electrochemical experiments reveal that the double-phase alloy is more sensitive to pitting than the single-phase alloy.
      Graphical abstract image

      PubDate: 2017-09-20T06:31:06Z
       
  • Equivalent hydrogen fugacity during electrochemical charging of some
           martensitic advanced high-strength steels
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Jeffrey Venezuela, Evan Gray, Qinglong Liu, Qingjun Zhou, Clotario Tapia-Bastidas, Mingxing Zhang, Andrej Atrens
      A new thermal desorption spectroscopy apparatus was used to study hydrogen in four martensitic advanced high-strength steels (designated MS980, MS1180, MS1300 and MS1500) after gaseous hydrogen charging, and after hydrogen charging electrochemically in 0.1M NaOH and in 3.5wt.% NaCl. The hydrogen concentration did not correlate strongly with steel strength. For MS1500, a relationship was derived between equivalent hydrogen fugacity and the applied charging overpotential. Also for MS1500, the trap binding energies were evaluated to be 26.4kJmol−1 and 61.0kJmol−1, which were interpreted as dislocation and interface hydrogen traps.

      PubDate: 2017-09-20T06:31:06Z
       
  • Oxidative protection of carbon fibers with carborane-containing polymer
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Shengli Cheng, Zhihuan Weng, Xin Wang, Yunxing Pan, Xigao Jian, Jinyan Wang
      To improve the oxidation resistance of carbon fibers, a series of carborane-containing polymer-based coatings were prepared. The oxidation resistance and microstructure of the coatings were investigated. According to XPS, FT-IR and XRD analysis, the high oxidation resistance of the polymer-based coatings was attributed to the boron oxide protective layer formed from the oxidation of carborane groups in the coating. Ceramic coatings were prepared from heat treatment of polymer-based coatings under argon at 1300°C for 2h. The great oxidation resistance of the ceramic coating was attributed to the existence of boron carbide in coating.

      PubDate: 2017-09-20T06:31:06Z
       
  • Mechanism and sensitivity of Fe-C coated long period fiber grating sensors
           for steel corrosion monitoring of RC structures
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Yizheng Chen, Fujian Tang, Yan Tang, Matthew J. O’Keefe, Genda Chen
      The mechanism and sensitivity of long period fiber gratings (LPFG) corrosion sensor, which is made by coating LPFG with an inner layer of silver and an outer layer of Fe-C, are investigated in this study. Two silver and three Fe-C thicknesses were considered. Results indicate that a linear relationship is present between the change in the resonant wavelength and the mass loss of the outer Fe-C layer within certain ranges. The corrosion sensitivity and service life of LPFG corrosion sensor depend on the thickness of both silver and Fe-C layers.

      PubDate: 2017-09-20T06:31:06Z
       
  • Hot corrosion behaviour of single-phase platinum-modified aluminide
           coatings: Effect of Pt content and pre-oxidation
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Y.F. Yang, C.Y. Jiang, Z.Y. Zhang, Z.B. Bao, M.H. Chen, S.L. Zhu, F.H. Wang
      Hot corrosion behaviour of nickel-based aluminide coatings with different thicknesses of initial Pt plating was evaluated in the Na2SO4/NaCl (75:25, wt./wt.) salt mixture at 900°C. Compared to plain aluminide, the Pt-modified coatings showed better hot corrosion resistance by hindering the outward diffusion of undesirable elements from the substrate alloy. Pre-oxidation was confirmed to be capable of preventing molten salt from accessing the alloy surface and reversibly dissolving the oxide scale. Oxide growth and dissolution, acting as two competitive processes, occurred simultaneously and had an important impact on the entire performance of the Pt-modified aluminide coatings in hot corrosion.

      PubDate: 2017-09-20T06:31:06Z
       
  • Effect of irradiation on corrosion of 304 nuclear grade stainless steel in
           simulated PWR primary water
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Ping Deng, Qunjia Peng, En-Hou Han, Wei Ke, Chen Sun, Zhijie Jiao
      Effect of irradiation on corrosion of 304 nuclear grade stainless steel (304NG SS) in simulated primary water of pressurized water reactor was investigated. The investigation was conducted by comparing the microstructure of the oxide scale formed on the steel irradiated to different doses by proton. The results revealed that increasing irradiation dose promoted both the corrosion and intergranular corrosion of 304NG SS. This is attributed to the irradiation induced defects as well as the Cr depletion at the grain boundary in the steel.

      PubDate: 2017-09-20T06:31:06Z
       
  • Building direction dependence of corrosion resistance property of
           Ti–6Al–4V alloy fabricated by electron beam melting
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Xiaojuan Gong, Yujie Cui, Daixiu Wei, Bin Liu, Ruiping Liu, Yan Nie, Yunping Li
      Electrochemical measurements in 1 M HCl solution were performed to investigate the corrosion behaviour of Ti–6Al–4V alloy fabricated by electron beam melting (EBM) with cylindrical axes deviating from the building direction by 0°, 45°, 55°, and 90°. Microstructure characterization before and after the tests was carried out by using a variety of methods The results suggested that the corrosion resistance of EBM alloy in 1 M HCl solution increased slightly in the order of 45°, 90°, 55°, and 0°. Such difference can be ascribed to the grain boundary density and β phase constitution, which varied with the building direction.

      PubDate: 2017-09-20T06:31:06Z
       
  • Corrosion resistance of AISI 316L coated with an air-cured hydrogen
           silsesquioxane based spin-on-glass enamel in chloride environment
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Felix Lampert, Alexander Bruun Christiansen, Rameez Ud Din, Yaiza Gonzalez-Garcia, Per Møller
      The efficiency of thin hydrogen silsesquioxane (HSQ) −based corrosion barrier coatings on 316L substrates after oxidative thermal curing at 400–550°C in air was investigated. Infrared spectroscopy and electrochemical impedance spectroscopy showed that an increasing curing temperature leads to progressing coating densification, accompanied by decreasing barrier properties. Cyclic polarization measurements indicated that defects due to substrate oxidation are detrimental for the substrate passivity. Insufficiently polymerized coatings showed poor chemical stability in neutral salt spray testing and the chemical coating stability increased with curing temperature. Oxidative curing was found inadequate as polymerization treatment of HSQ-based corrosion barrier coatings on 316L substrate.

      PubDate: 2017-09-20T06:31:06Z
       
  • Corrosion fatigue crack growth of laser additively-manufactured 316L
           stainless steel in high temperature water
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Xiaoyuan Lou, Michelle A. Othon, Raul B. Rebak
      Corrosion fatigue crack growth of laser additively-manufactured 316L stainless steel was studied in oxygenated 288°C water. Effects of heat treatment, crack orientation, and applied cold work were evaluated. Stress-relieved material showed higher crack growth rate than annealed material. Their difference was not significant when the loading frequency was high. When the loading frequency decreased, the effects of material conditions created by heat treatment, crack orientation and applied cold work slightly increased. Retained unrecrystallized grains in an annealed material did not affect significantly the cracking susceptibility. High-temperature recrystallization treatment of an AM 316L component may be necessary for nuclear applications.

      PubDate: 2017-09-20T06:31:06Z
       
  • In situ monitoring of crevice corrosion morphology of Type 316L stainless
           steel and repassivation behavior induced by sulfate ions
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Takahito Aoyama, Yu Sugawara, Izumi Muto, Nobuyoshi Hara
      To analyze the repassivation mechanism induced by SO4 2− ions, in situ monitoring of the crevice corrosion morphology on Type 316L stainless steel was performed. The repassivation of the crevice corrosion was observed when the solution was changed from 1M NaCl to 0.88M Na2SO4 or to 1M NaCl-0.88M Na2SO4. The active dissolution of Type 316L stainless steel was suppressed by SO4 2− ions at pH 0.4 in anodic polarization measurements. The transition from active to passive states inside the crevice was likely promoted by SO4 2− ions.

      PubDate: 2017-09-20T06:31:06Z
       
  • Improving the chemical de-alloying of amorphous Au alloys
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Yanpeng Xue, Federico Scaglione, Paola Rizzi, Livio Battezzati
      In this work, the chemical de-alloying behavior of Au30Cu38Ag7Pd5Si20(at.%) amorphous alloy which was rapidly solidified from the melt in the form of ribbons were investigated. First a comparison between samples de-alloyed in nitric acid with and without HF was conducted to achieve homogeneous de-alloying process. Then the morphology and structure of nanoporous gold (NPG) were adjusted by tuning the de-alloying parameters, such as HNO3 concentration, electrolyte temperature and de-alloying time. Finally the surface enhanced Raman scattering(SERS) capability of the as-prepared NPG was evaluated using 4,4′-bi-pyridine as probe molecule.
      Graphical abstract image

      PubDate: 2017-09-20T06:31:06Z
       
  • Effect of Cr and Y2O3 on the oxidation behavior of Co-based oxide
           dispersion strengthened superalloys at 900°C
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Hao Yu, Shigeharu Ukai, Shigenari Hayashi, Naoko Hori Oono
      In order to study the effect of Cr and Y2O3 addition on the oxidation behavior of novel Co-20Cr-10Al (wt.%) oxide dispersion strengthened (ODS) superalloys, an isothermal oxidation test was carried out at 900°C in air. The addition of Cr altered the oxide scale from the multilayered scale with an external Co oxide/CoAl2O4 and an inner Al2O3 to a single Al2O3 scale. Y2O3 addition increased oxidation mass gain slightly but improved spallation resistance of the external Al2O3 scale.

      PubDate: 2017-09-20T06:31:06Z
       
  • A research on the corrosion and stress corrosion cracking susceptibility
           of 316L stainless steel exposed to supercritical water
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Xianglong Guo, Kai Chen, Wenhua Gao, Zhao Shen, Ping Lai, Lefu Zhang
      This study investigated the corrosion and stress corrosion cracking susceptibility of 316L stainless steel exposed to 550°C and 600°C supercritical water. XRD, SEM, EDS and EBSD analyses have been carried out to characterize the microstructure of the tested specimens. Results indicate that increasing the test temperature reduced the corrosion and SCC resistance of 316L SS. The oxide scale of corroded specimen shows a duplex structure, and the fracture analysis indicates that the formation of Fe3O4 ‘channels’ in the Fe-Cr spinel layer contributes to the intergranular and transgranular SCC of the materials in 550°C and 600°C SCW.

      PubDate: 2017-09-20T06:31:06Z
       
  • Resistance to simulated rain of hydroxyapatite- and calcium oxalate-based
           coatings for protection of marble against corrosion
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Gabriela Graziani, Enrico Sassoni, George W. Scherer, Elisa Franzoni
      Dissolution in pure and acid rain is among the main environmental degradation processes of marble. Coatings based on hydroxyapatite (HAP) have been proposed to prevent marble corrosion, providing encouraging results. In this paper, the resistance to dissolution was investigated on marble treated with different HAP-treatment formulations and compared to commercial ammonium oxalate. The ability of the coating to prevent corrosion was evaluated by performing wetting/drying cycles, by a custom-designed apparatus simulating rain. When ethanol is added to the solution used to form HAP, a significant reduction in calcium ions leached from marble is found, which is indicative of reduced corrosion.

      PubDate: 2017-09-20T06:31:06Z
       
  • Improvement of oxidation resistance of a Mo-62Si-5B (at.%) alloy at
           1250°C and 1350°C via an in situ pre-formed SiO2 fabricated by spark
           plasma sintering
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): S.H. Wen, C.G. Zhou, J.B. Sha
      A Mo-Si-B-O alloy was obtained by spark plasma sintering (SPS) using fine Mo-62Si-5B (at.%) alloy powder (with a D50 size of 2.21μm). The SPS Mo-Si-B-O pseudo alloy consisted of fine MoSi2/Mo5Si3/MoB/SiO2 microstructure and showed better oxidation resistance than the coarsened microstructure. The SiO2 that was pre-formed during SPS and the fine microstructure reduced the incubation stage of formation of continuously protective borosilicate layer, which is beneficial to the oxidation resistance. A “Mechanical locking” mechanism for the borosilicate layer by spilling of the pre-formed SiO2 decreased cracks in the borosilicate-substrate interface, increased interface strength and integrity of the borosilicate layer.
      Graphical abstract image

      PubDate: 2017-09-20T06:31:06Z
       
  • Effects of combined organic and inorganic corrosion inhibitors on the
           nanostructure cerium based conversion coating performance on AZ31
           magnesium alloy: Morphological and corrosion studies
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): E. Saei, B. Ramezanzadeh, R. Amini, M. Salami Kalajahi
      Magnesium (Mg) AZ31 samples were chemically treated by a series of room temperature nanostructure cerium based conversion coatings containing Mn(NO3)2·4H2O, Co(NO3)2·6H2O, and polyvinyl alcohol (PVA). The microstructure and corrosion protection properties of different samples were studied by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), electrochemical impedance spectroscopy (EIS) and polarization test in 3.5wt.% NaCl solution. Results demonstrated that the AZ31 Mg alloy sample treated by Ce-Mn-PVA showed the highest corrosion resistance. A denser Ce film with lower crack was precipitated on the sample treated by Ce-Mn-PVA conversion coating.

      PubDate: 2017-09-20T06:31:06Z
       
  • Simulating sulfuric acid dew point corrosion of enamels with different
           contents of silica
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Ken Chen, Minghui Chen, Zhongdi Yu, Qunchang Wang, Shenglong Zhu, Fuhui Wang
      Corrosion of three bulk enamels with different silica contents in sulfuric acid was studied. Catastrophic corrosion happened for enamel with 54.6wt% silica. Its weight loss reached 36.90mg/cm2 after seven-day corrosion. A porous leached layer with tremendous cracks formed at surface during corrosion, which favored acid invading and further corrosion. On the contrary, the durability of enamels with silica content over 60wt% was guaranteed by their highly connected silicate network and a developed dense gel layer that clogged corrosion pits. Their weight losses were less than 0.2mg/cm2 after seven-day corrosion.

      PubDate: 2017-09-20T06:31:06Z
       
  • Multiscale investigation of crack path and microstructural changes during
           liquid metal embrittlement of 304L austenitic steel in liquid sodium
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): B. Barkia, T. Auger, J.L Courouau, J. Bourgon
      Fracture micro-mechanisms and crack path of embrittled austenitic steel 304L by liquid sodium strained at 4.2×10−7 ms−1 and 573K are investigated underneath the fracture surface by transmission electron microscopy down to the nanoscale. Automated crystal orientation and phase mapping analyses show that abundant martensitic transformation (γ austenite→α’ martensite) as well as mechanical twinning occur during the deformation of austenite and play a major role in the fracture process. A correlation between the fracture surface features and the underlying microstructural interfaces is evidenced, strengthening the conclusion that liquid metal embrittlement by sodium of austenitic steels is basically an interfacial cracking phenomenon.

      PubDate: 2017-09-20T06:31:06Z
       
  • Evolution and interaction of corrosive species during the initial NaCl
           particle induced corrosion on zinc coated skin-passed steel
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Georg Hölzl, Gerald Luckeneder, Hubert Duchaczek, Christoph Kleber, Achim Walter Hassel
      Within this work, NaCl particle induced corrosion of electrolytically zinc coated, skin-passed steel and especially the influence of the skin-pass texture was investigated. Skin-passing is a wet-rolling procedure that applies a texture on the sample surface to improve the mechanical properties and to enhance the optical appearance of applied coatings.Samples were studied in-situ and ex-situ using Raman spectroscopy and optical microscopy in a self-designed 3D-printed weathering cell. Raman imaging and spectral correlation function were applied ex-situ to obtain more detailed information about the product distribution after drying the sample. Complementary information was obtained using SEM and EDX mapping.
      Graphical abstract image

      PubDate: 2017-09-20T06:31:06Z
       
  • Synthesis of graphene oxide nanosheets functionalized by green corrosion
           inhibitive compounds to fabricate a protective system
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Bahar Nikpour, Bahram Ramezanzadeh, Ghasem Bahlakeh, Mohammad Mahdavian
      The adsorptive behavior of Urtica Dioica (U.D) leaf extract on the graphene oxide nanosheets (GONs) was examined by experimental and density functional theory (DFT) approaches. Experimental results demonstrated the strengthened adsorption of the Urtica Dioica leaf extract on the GO sheets at acidic pH of 2, leading to the corrosion inhibition of mild steel in chloride solution. It was observed that the inhibition effects of GO-U.D sheets enhanced in the presence of Zn2+ cations in solution and coating phases. The DFT results revealed the physisorption and chemisorption of inhibitors onto GO surfaces.

      PubDate: 2017-09-20T06:31:06Z
       
  • Improvement in the oxidation resistance of Nb-Si based alloy by selective
           laser melting
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): Yueling Guo, Lina Jia, Bin Kong, Fengxiang Zhang, Jinhui Liu, Hu Zhang
      Nb-18Si-24Ti-2Cr-2Al-2Hf (at.%) alloy was fabricated by selective laser melting (SLM). Results showed that an ultra-fined microstructure was achieved by SLM. After oxidation at 1250°C for 50h, the weight gains of Nb-Si based alloys via SLM and vacuum induction melting (VIM) were 96.48mg/cm2 and 198.91mg/cm2, respectively. Compared with the VIM alloy, the SLM alloy exhibited a slower oxidation kinetic rate, featured by the formation of a more compact oxide scale without spallation. The improvement in the oxidation resistance was attributed to the microstructure refinement.

      PubDate: 2017-09-20T06:31:06Z
       
  • Real time, in-situ deuteriding of uranium encapsulated in grout; effects
           of temperature on the uranium-deuterium reaction
    • Abstract: Publication date: October 2017
      Source:Corrosion Science, Volume 127
      Author(s): C.A. Stitt, C. Paraskevoulakos, N.J. Harker, A. Banos, K.R. Hallam, C.P. Jones, T.B. Scott
      To accurately predict the initiation and evolution of uranium hydride potentially present in nuclear waste containers, studies of simulated conditions are required. Here, for the first time, the uranium-deuterium reaction was examined in-situ, in real time, whilst within grouted media. A deuterium gas control rig and stainless steel-quartz glass reaction cell were configured on a synchrotron beam line to collect X-ray diffraction and X-ray tomography data. It was found that deuteride formation was limited by the uranium and grout thermal conductivities and deuteride initiation only commenced above a threshold temperature. Strong adherence between uranium oxide and grout was also observed.
      Graphical abstract image

      PubDate: 2017-09-20T06:31:06Z
       
  • Cerium-loaded algae exoskeletons for active corrosion protection of coated
           AA2024-T3
    • Abstract: Publication date: Available online 19 September 2017
      Source:Corrosion Science
      Author(s): Paul J. Denissen, Santiago J. Garcia
      Graphical abstract image

      PubDate: 2017-09-20T06:31:06Z
       
  • Microstructure-Sensitive Modeling of Pitting Corrosion: Effect of the
           Crystallographic Orientation
    • Abstract: Publication date: Available online 18 September 2017
      Source:Corrosion Science
      Author(s): Patrick T. Brewick, Nithya Kota, Alexis C. Lewis, Virginia G. DeGiorgi, Andrew B. Geltmacher, Siddiq M. Qidwai
      This work presents an innovative framework for the simulation of stable pit growth that accounts for the material microstructure in the computational model to investigate its effect on pit growth behavior. While many microstructural attributes can affect corrosion kinetics, the current work focuses on the effect of the crystallographic plane orientation at the corrosion front by utilizing variations in polarization behavior with orientation in a single phase material. The current modeling results show that crystallographic orientation significantly affects local pit growth rates (even with corrosion potential variations as little as 5-10% across orientations) and the resultant tortuous shapes are similar to pits observed in experimental studies.

      PubDate: 2017-09-20T06:31:06Z
       
  • High-temperature oxidation of sintered austenitic stainless steel
           containing boron or yttria
    • Abstract: Publication date: Available online 15 September 2017
      Source:Corrosion Science
      Author(s): M. Peruzzo, T.D. Beux, M.F.C. Ordoñez, R.M. Souza, M.C.M. Farias
      The present study examines the cyclic oxidation behaviour at 900 ° C in air of sintered 316L austenitic stainless steels containing 1wt.% yttria or 0.6wt.% boron. The microstructures of the sintered and oxidized samples were characterised by field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD) analyses. The two-dimensional image analyses of the pore amount, size and shape was correlated with the oxidation rate. The oxidation resistance of the sintered materials is influenced not only by the porosity characteristics but also by the capability of the alloy element or compound to form a more protective oxide scale. For the conditions chosen in this study, the boron-containing steel was found to provide a strong improvement in the high-temperature cyclic oxidation, which appears to be related to both the high densification favoured by the eutectic reaction and the presence of an iron borate. For the yttria-containing steel, the effect of porosity on oxidation rate was suppressed by the presence of oxides containing yttria and chromium.

      PubDate: 2017-09-20T06:31:06Z
       
  • On the stress corrosion crack growth behaviour in high temperature water
           of 316L stainless steel made by laser powder bed fusion additive
           manufacturing
    • Abstract: Publication date: Available online 15 September 2017
      Source:Corrosion Science
      Author(s): Xiaoyuan Lou, Miao Song, Paul W. Emigh, Michelle A. Othon, Peter L. Andresen
      This paper reports a comprehensive study of the stress corrosion crack growth behaviour of laser additively-manufactured (AM) 316L stainless steel in high temperature water. A wide range of parameters and their effects were evaluated, including microstructure, heat treatment, stress intensity factor, cold work, crack orientation, oxidizing vs. reducing conditions, and porosity. Stress-relieved material exhibits anisotropic microstructure and preferred crack path along material’s build direction. With high-temperature annealing, the material recrystallizes to equiaxed structure and behaves like wrought material. The retained unrecrystallized grains in an annealed AM part may not affect the cracking. Increased porosity may enhance the crack growth rate.

      PubDate: 2017-09-20T06:31:06Z
       
  • Effect of heat treatment on hydrogen-assisted fracture behavior of
           PH13-8Mo steel
    • Abstract: Publication date: Available online 15 September 2017
      Source:Corrosion Science
      Author(s): Xinfeng Li, Jin Zhang, Eiji Akiyama, Qizhen Li, Yanfei Wang
      Effect of heat treatment on hydrogen-assisted fracture behavior of PH13-8Mo steel was investigated. The results show that hydrogen embrittlement susceptibility of the specimens aged at 600°C is the lowest compared with that of the specimens aged at 430°C and 540°C at the same aging time. With an increase in aging time, the susceptibility to hydrogen embrittlement increases for specimens aged at 430°C while it decreases for specimens aged at 540°C and 600°C. Hydrogen-assisted cracks initiate and propagate along lath and prior austenite grain boundaries. In addition, the quantitative relationship between hydrogen embrittlement index and fracture mode is given.

      PubDate: 2017-09-20T06:31:06Z
       
  • Synthesis, electrochemical and quantum chemical studies of some prepared
           surfactants based on azodye and Schiff base as corrosion inhibitors for
           steel in acid medium
    • Abstract: Publication date: Available online 15 September 2017
      Source:Corrosion Science
      Author(s): M.A. Bedair, M.M.B. El-Sabbah, A.S. Fouda, H.M. Elaryian
      Three nonionic surfactants based on azodye and Schiff base condensed with poly ethylene glycol were prepared. Their inhibition effect towards corrosion of steel in hydrochloric acid was investigated using electrochemical frequency modulation, electrochemical impedance spectroscopy, potentiodynamic polarization, quantum chemical calculations and molecular dynamic simulation. The data revealed that the prepared surfactants had the ability to inhibit corrosion reaction with good agreement between experimental and computational results. The adsorption of surfactants on the carbon steel surface in 1M HCl was found to obey Langmuir isotherm. Polarization results showed that these inhibitors act as mixed-type inhibitors.

      PubDate: 2017-09-20T06:31:06Z
       
  • Reply to Discussion on “Microstructural evolution and
           stress-corrosion-cracking behavior of thermally aged Ni-Cr-Fe alloy” by
           S.C. Yoo, K.J. Choi, T. Kim, S.H. Kim, J.Y. Kim, J.H. Kim [Corros. Sci.
           111 (2016) 39]
    • Abstract: Publication date: Available online 14 September 2017
      Source:Corrosion Science
      Author(s): Seung Chang Yoo, Kyoung Joon Choi, Taeho Kim, Si Hoon Kim, Ju Young Kim, Ji Hyun Kim


      PubDate: 2017-09-20T06:31:06Z
       
  • Determination of the key parameters involved in the formation process of
           akaganeite in a laboratory-simulated wet-dry cyclic process
    • Abstract: Publication date: Available online 14 September 2017
      Source:Corrosion Science
      Author(s): Haigang Xiao, Wei Ye, Xiaoping Song, Yanmin Wang, Yuantai Ma, Ying Li
      To determine the key parameters of akaganeite formation during a wet-dry cyclic process, cyclic immersion tests and simulated experiments were employed under laboratory conditions. The constituents of rust were characterized using XRD and FTIR. According to the results, green rust (FeII 4FeIII 2Cl2-x(OH)12+x) was a crucial intermediate product during the formation of akaganeite. The evaporation rate of the electrolyte and the amount of Cl− per area played a key role in the formation of the green rust. Additionally, the required amounts of salt for akaganeite formation were determined from simulation experiments in different relative humidity environments.

      PubDate: 2017-09-20T06:31:06Z
       
  • Discussion on “Microstructural evolution and stress-corrosion-cracking
           behavior of thermally aged Ni-Cr-Fe alloy” by S.C. Yoo, K.J. Choi, T.
           Kim, S.H. Kim, J.Y. Kim, J.H. Kim [Corros. Sci. 111 (2016) 39]
    • Abstract: Publication date: Available online 14 September 2017
      Source:Corrosion Science
      Author(s): Young Suk Kim, Sung Soo Kim


      PubDate: 2017-09-20T06:31:06Z
       
  • Effects of flow, Si inhibition, and concurrent corrosion of dissimilar
           metals on the corrosion of aluminium in the environment following a
           loss-of-coolant accident
    • Abstract: Publication date: Available online 13 September 2017
      Source:Corrosion Science
      Author(s): Shaoqiang Guo, Jeanette J Leavitt, Xinquan Zhou, Yi Xie, Sabrina Tietze, Yakun Zhu, Angela Lawver, Erik Lahti, Jinsuo Zhang
      Experiments were conducted to investigate the aluminium corrosion in the simulated containment pool environment following a loss-of-coolant accident at a nuclear power plant. The results show an identical power law correlation between the corrosion rate and mass transfer coefficient for different flow systems. Aluminium corrosion is inhibited by the silicon leached from the insulation materials, and the inhibition efficiency increases with the silicon concentration due to the increase of Al2SiO5 or SiO2 content in the passivation layer. The concurrent corrosion of copper and iron has little influence on aluminium corrosion while the presence of zinc significantly retards the aluminium corrosion.

      PubDate: 2017-09-14T02:45:32Z
       
  • The Corrosion of Zr(Fe, Cr)2 and Zr2Fe Secondary Phase Particles in
           Zircaloy-4 under 350°C pressurised water conditions
    • Abstract: Publication date: Available online 13 September 2017
      Source:Corrosion Science
      Author(s): Kirsty Annand, Magnus Nord, Ian MacLaren, Mhairi Gass
      Using Scanning Transmission Electron Microscopy (STEM) coupled with Dual Electron Energy Loss Spectroscopy (DualEELS) and scanned diffraction, the corrosion and incorporation of Secondary Phase Particles (SPPs) in the oxide layer of Zircaloy-4 material has been investigated. This study focuses on mapping the corrosion of Zr2Fe and Zr(Fe, Cr)2 precipitates during the oxidation process and depicting their morphology as the oxidation front advances through the material. It has been found that Zr2Fe SPPs retain the same general shape as in their pre oxidation stage, and transform to a nanocrystalline homogeneous mixed oxide, with a strong crystallographic texture, but hitherto unknown structure. The Zr(Fe, Cr)2 Laves-phase SPPs however, oxidise in a notably more complicated manner. As the α-Zr around an SPP begins to oxidise, the SPP is completely encapsulated by the ZrO2 whilst much of the SPP remains initially unoxidised. But, on oxidation, significant elemental segregation takes place, usually leaving a Cr2O3-rich cap, a nanocrystalline Zr,Cr mixed oxide body and veins of well-crystallised metallic iron. Both forms of SPP have a different expansion on oxidation compared to the Zr, resulting in cracking of the ZrO2.
      Graphical abstract image

      PubDate: 2017-09-14T02:45:32Z
       
  • Hot corrosion behavior and near-surface microstructure of a
           “Low-Temperature High-Activity Cr-aluminide” coating on Inconel 738LC
           exposed to Na2SO4, Na2SO4 + V2O5 and Na2SO4 + V2O5 + NaCl at 900°C
    • Abstract: Publication date: Available online 12 September 2017
      Source:Corrosion Science
      Author(s): M. Salehi Doolabi, B. Ghasemi, S.K. Sadrnezhaad, A. Habibollahzadeh, K. Jafarzadeh
      Hot corrosion is a serious problem in gas turbines due to poor quality fuels which contain Na, V, S and Cl. To resolve the problem, Cr-aluminide was coated on IN-738LC superalloy with a two steps pack cementation process. Oxidation behavior and near-surface microstructure of the coating showed consecutive increase in destruction by exposition to Na2SO4, 75Na2SO4 +25V2O5 and 70Na2SO4 +25V2O5 +5NaCl (wt.%). Kinetic studies indicated parabolic corrosion rate in salt-less samples due to diffusion. Similar expression for salt-covered samples was assessed for oxide dissolution. Plate-like, broken-plate-like and cauliflower-like morphologies attributed to the corrosion products were observed after exposition to above three salts, respectively.

      PubDate: 2017-09-14T02:45:32Z
       
  • Differences in pitting growth kinetics between Zr60Ni25Al15 and
           Zr60Cu25Al15 metallic glasses exposed to a 0.6M NaCl aqueous solution
    • Abstract: Publication date: Available online 12 September 2017
      Source:Corrosion Science
      Author(s): Yu Li, Jian Xu
      By the artificial pit electrode approach, growth behaviours of stable pits for melt-spun Zr60Ni25Al15 and Zr60Cu25Al15 metallic glasses (MGs) exposed to a 0.6M NaCl solution are investigated. By characterising the current transient events and growth kinetics parameters, the effect of selective dissolution caused by the late transition metals on the pitting growth kinetics is revealed. The pit solution acidity is estimated with local acidification model. It is shown that the stable pitting growth for Zr60Cu25Al15 MG is considerably more favourable compared to Zr60Ni25Al15, because of its more rapid pit growth rate and more aggressive pit solution.
      Graphical abstract image

      PubDate: 2017-09-14T02:45:32Z
       
  • Fabrication of polydimethylsiloxane-derived superhydrophobic surface on
           aluminium via chemical vapour deposition technique for corrosion
           protection
    • Abstract: Publication date: Available online 12 September 2017
      Source:Corrosion Science
      Author(s): Wen Sun, Lida Wang, Zhengqing Yang, Sijia Li, Tingting Wu, Guichang Liu
      In this paper, a facile method based on the combination of chemical-etching and chemical vapour deposition is developed for the fabrication of superhydrophobic polydimethylsiloxane-derived film on aluminium substrate. It is revealed that the fabricated superhydrophobic aluminium has a static water contact angle as high as 158.7°, a good self-cleaning property and a persistent high corrosion resistance to 3.5wt.% NaCl solutions. The presented method provides a scalable route to endow metals and alloys with multiple functions, making them suitable for the applications that need waterproof, dustproof and corrosion resistance properties.

      PubDate: 2017-09-14T02:45:32Z
       
  • Pyrophoric behaviour of ultrafine Mo powder
    • Abstract: Publication date: Available online 12 September 2017
      Source:Corrosion Science
      Author(s): Lu Wang, Guo-Hua Zhang, Shu-Qiang Jiao, Kuo-Chih Chou
      The pyrophoric behaviour of as-reduced ultrafine Mo powder at 873K was investigated. The dew point of the H2 gas used in the preparation process had a significant effect on the pyrophoric behaviour of the resulting Mo powder as well as the product compositions. A low dew point of H2 resulted in pyrophoric behaviour and the formation of γ-Mo2N with a small amount of MoO3 forming outside; in contrast, a high dew point of H2 inhibited the pyrophoric behaviour. The morphology of the pyrophoric product was the same as that of the MoO2 raw material.

      PubDate: 2017-09-14T02:45:32Z
       
  • Fabrication of non-wetting surfaces on zinc surface as corrosion barrier
    • Abstract: Publication date: Available online 12 September 2017
      Source:Corrosion Science
      Author(s): Peng Wang, Tianping Li, Dun Zhang
      Two kinds of non-wetting surfaces, super-hydrophobic surface (SHS) and slippery lubricant-infused porous surface (SLIPS), were fabricated on zinc surface with hydrothermal method. Their surface properties were characterized with FE-SEM, XRD, XPS and contact angle meter, and their corrosion protection performances were evaluated with electrochemical measurements. It was demonstrated that both kinds of surfaces present high corrosion resistance to the underlying zinc substrate for the air (or lubricant) layer trapped in film. In comparison with SHS, the SLIPS presents advantage in maintaining stability in corrosive medium. This research provides guidance for the selection of non-wetting surface in practical corrosion protection application.

      PubDate: 2017-09-14T02:45:32Z
       
  • Evaluation of multiple stress corrosion crack interactions by in-situ
           Digital Image Correlation
    • Abstract: Publication date: Available online 8 September 2017
      Source:Corrosion Science
      Author(s): J. Bolivar, M. Frégonèse, J. Réthoré, C. Duret-Thual, P. Combrade
      Digital Image Correlation (DIC), Acoustic Emission and Electrochemical Noise measurements were applied to study the growth of multiple intergranular cracks as a colony on an Alloy 600 in a tetrathionate solution. Cracks exceeding 55μm in length and 0.45μm in opening were successfully detected by DIC. Moreover, crack population was classified into initiating, active and dormant cracks, active population being the larger one. The emergence and intensification of interactions produced a modification on the colony growth behavior. They range from a mostly surface crack propagation (in the absence of interactions), to in depth propagation predominantly governed by crack shielding.

      PubDate: 2017-09-14T02:45:32Z
       
  • IFC - Editorial Board
    • Abstract: Publication date: September 2017
      Source:Corrosion Science, Volume 126


      PubDate: 2017-09-08T03:57:54Z
       
  • The effect of Li0 on the corrosion of stainless steel alloy 316L exposed
           to molten LiCl-Li2O-Li
    • Abstract: Publication date: September 2017
      Source:Corrosion Science, Volume 126
      Author(s): Augustus Merwin, Dev Chidambaram
      A knowledge gap exists in our understanding of corrosion of alloys in molten LiCl-Li2O-Li. Coupons of stainless steel alloy 316L were exposed to LiCl-Li2O solutions containing up to 1wt%Li. A protective surface films of LiCrO2 forms in molten solutions containing up to 0.4wt%Li. The surfaces of samples exposed to melts containing greater than 0.4wt% Li were observed to be depleted of Cr and mostly devoid of oxides. Results indicate that material interactions with the LiCl-Li2O-Li system are governed by electrochemical oxidation phenomena when the Li concentration is low, while liquid metal effects dominate when the Li concentration is high.

      PubDate: 2017-09-08T03:57:54Z
       
  • Effects of boron addition on the high temperature oxidation resistance of
           dense sSiBCN monoliths at 1500°C
    • Abstract: Publication date: September 2017
      Source:Corrosion Science, Volume 126
      Author(s): Daxin Li, Zhihua Yang, Dechang Jia, Xiaoming Duan, Shengjin Wang, Qishuai Zhu, Yang Miao, Jiancun Rao, Yu Zhou
      The high-temperature oxidation behavior of various boron addition SiBCN monoliths has been explored. Boron addition promotes the formation of new B x C phase and growth of SiC gains. At the initial stage of oxidation, surface B x C and BN(C) are prior to SiC generating B2O3. As time progresses, SiC oxidizes to SiO2 further reacted with B2O3 forming stable SiO2-B2O3 binary melt or borosilicate. Boron-enhanced SiC oxidation occurs immediately with the rapid consumption of BN(C), B x C and loss of B2O3 from borosilicate decomposition, thereby promoting oxidation rate. Substantial SiC and BN(C) in amorphous SiO2 for transition layer is the main structure feature.

      PubDate: 2017-09-08T03:57:54Z
       
  • Local supersaturation and the growth of protective scales during CO2
           corrosion of steel: Effect of pH and solution flow
    • Abstract: Publication date: September 2017
      Source:Corrosion Science, Volume 126
      Author(s): Mobbassar Hassan Sk, Aboubakr M. Abdullah, Monika Ko, Bridget Ingham, Nick Laycock, Rakesh Arul, David. E. Williams
      By correlating in-situ synchrotron X-ray diffraction measurements with electrochemical measurements using a rotating disc electrode, we demonstrate the critical dependence on the local supersaturation of the kinetics of formation of a protective crystalline scale on the surface of carbon steel during CO2 corrosion in brine at elevated temperature. We show that the total current is the sum of a current due to dissolution of iron and a current due to growth of a crystalline layer. We show that the dissolution current and the surface supersaturation are controlled by the thickness of an initially-formed amorphous layer. As in earlier work at room temperature, we infer that the amorphous layer dissolves as a carbonato-iron complex with surface concentration of the dissolving species determined by the electrode potential, and speculate on the importance of the chemistry of this dissolution reaction in determining the corrosion result. We construct a simple transport-reaction model, which shows that the supersaturation is determined by the precipitation rate constant of colloidal FeCO3 and by the product of the current for Fe dissolution and the diffusion boundary layer thickness. Using this model, we show crystal growth rate varying quadratically with supersaturation at pH 6.8 and linearly at pH 7.3. The effects of electrode potential, surface roughness, microstructure and flow are simply to change supersaturation by changing the current density per unit projected area flowing through the amorphous initially formed layer. Variation of brine concentration has no effect. We illustrate the sensitivity to solution flow of the crystallinity of the final scale. We show that siderite is the first crystalline product and that chukanovite follows, with a delay time that decreases with increasing pH. The ratio of chukanovite to siderite is low at sufficiently high pH and increases with decreasing pH, possibly through a maximum. From the results, we advance ideas concerning the importance of local microenvironments and local fluctuations in mass-transport rate.

      PubDate: 2017-09-08T03:57:54Z
       
  • Sub-micrometer mesoporous silica containers for active protective coatings
           on AA 2024-T3
    • Abstract: Publication date: Available online 31 August 2017
      Source:Corrosion Science
      Author(s): Hongwei Shi, Liping Wu, Jun Wang, Fuchun Liu, En-Hou Han
      In the present work, the sub-micrometer containers were prepared using mesoporous silica particles (SBA-15) with parallel channels as reservoir and 8-hydroxyquinoline as corrosion inhibitor. Layer-by-layer assembling was used to construct a shell of polyelectrolytes around the silica particles. Release of 8-hydroxyquinoline from sub-micrometer containers was studied in response to acidic or alkaline pH values. The results of electrochemical impedance spectroscopy (EIS) show the improvement of corrosion resistance of epoxy coatings containing sub-micrometer containers. Self-healing ability of the epoxy coatings was provided by sub-micrometer containers, as evidenced by the results of scanning vibrating electrode technique (SVET).

      PubDate: 2017-09-02T03:49:19Z
       
  • Effect of extrusion on corrosion properties of Mg-2Ca-χAl (χ=0,
           2, 3, 5) alloys
    • Abstract: Publication date: Available online 31 August 2017
      Source:Corrosion Science
      Author(s): Peng-peng Wu, Fang-jun Xu, Kun-kun Deng, Fu-yin Han, Zhong-zhong Zhang, Rui Gao
      Effect of extrusion on the microstructure and corrosion properties of Mg-2Ca-χAl (χ=0, 2, 3, 5wt.%) alloys were investigated in present work. Results showed that the precipitated phase changes from Mg2Ca and (Mg, Al)2Ca to Al2Ca with increasing of Al content. Corrosion results indicated that the additional of Al could improve the corrosion resistance of Mg by the formation of protective (Mg, Al)2Ca and Al2Ca. The as-cast alloys showed uniform corrosion mechanism while the as-extruded Mg-Al-Ca alloys presented local corrosion characteristic. Corrosion mechanisms were analyzed and illustrated the change of corrosion behavior.
      Graphical abstract image

      PubDate: 2017-09-02T03:49:19Z
       
 
 
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