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  Subjects -> ENGINEERING (Total: 2272 journals)
    - CHEMICAL ENGINEERING (190 journals)
    - CIVIL ENGINEERING (183 journals)
    - ELECTRICAL ENGINEERING (102 journals)
    - ENGINEERING (1204 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: 17)
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: 245)
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: 8)
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: 25)
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: 10)
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: 29)
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: 37)
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: 31)
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: 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: 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: 16)
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: 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)
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: 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: 5)
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: 32)
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: 9)
Bulletin of the Crimean Astrophysical Observatory     Hybrid Journal  
Cahiers, Droit, Sciences et Technologies     Open Access  
Calphad     Hybrid Journal  
Canadian Geotechnical Journal     Hybrid Journal   (Followers: 22)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 43)
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: 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: 22)
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: 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: 266)
Composites Part A : Applied Science and Manufacturing     Hybrid Journal   (Followers: 185)
Composites Part B : Engineering     Hybrid Journal   (Followers: 278)
Composites Science and Technology     Hybrid Journal   (Followers: 179)
Comptes Rendus Mécanique     Full-text available via subscription   (Followers: 2)
Computation     Open Access  
Computational Geosciences     Hybrid Journal   (Followers: 14)
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: 7)
Computer Science and Engineering     Open Access   (Followers: 17)
Computers & Geosciences     Hybrid Journal   (Followers: 28)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 5)
Computers and Electronics in Agriculture     Hybrid Journal   (Followers: 4)
Computers and Geotechnics     Hybrid Journal   (Followers: 10)
Computing and Visualization in Science     Hybrid Journal   (Followers: 5)
Computing in Science & Engineering     Full-text available via subscription   (Followers: 30)
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: 42)
Control Theory and Informatics     Open Access   (Followers: 8)
Corrosion Science     Hybrid Journal   (Followers: 25)
CT&F Ciencia, Tecnologia y Futuro     Open Access   (Followers: 1)
CTheory     Open Access  

        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  [3051 journals]
  • Desulfurized flue gas corrosion coupled with deposits in a heating boiler
    • Abstract: Publication date: Available online 14 November 2017
      Source:Corrosion Science
      Author(s): Peiyuan Pan, Heng Chen, Zhiyuan Liang, Qinxin Zhao
      In-plant corrosion tests of five steels were conducted in a heating boiler in China to study the desulfurized flue gas corrosion coupled with deposits after the FGD (flue gas desulfurization) unit. The surface temperature of the steel was the key factor in the deposition and corrosion process. As the surface temperature increased, the corrosion of the steels was first exacerbated due to the increase in the Cl− concentration in the deposits and then mitigated due to the lack of the electrolyte. The stainless steels in this work showed much better performance than did the low alloy steel.

      PubDate: 2017-11-16T13:09:55Z
       
  • Study of dynamic degradation behaviour of porous magnesium under
           physiological environment of human cancellous bone
    • Abstract: Publication date: Available online 14 November 2017
      Source:Corrosion Science
      Author(s): Amir Putra Md Saad, Ardiyansyah Syahrom
      This study analyse the effect of integrating of physiological environment of human cancellous bone as shown by different level of cyclic compressive on the degradation behaviour of porous magnesium under dynamic immersion for bone scaffold applications. The porous magnesium (30%, 41% and 55% of porosity) were immersed in simulated body fluid (SBF) with flowrate 0.0025ml/min while having dynamic loading (1000με, 2000με and 3500με) for 24, 48 and 72h. The influenced integrating both boundaries have increased the relative weight loss and degradation rate as high as 61.56% and 93.67%, respectively as compared to dynamic immersion test only.
      Graphical abstract image

      PubDate: 2017-11-16T13:09:55Z
       
  • The effect of work-hardening and thermal annealing on the early stages of
           the uranium-hydrogen corrosion reaction
    • Abstract: Publication date: Available online 14 November 2017
      Source:Corrosion Science
      Author(s): A. Banos, C.P. Jones, T.B. Scott
      The characteristics of hydride formation on metallic U at the early stages were investigated for three differently treated samples. The first sample reacted in its as-received state, the second was thermally annealed and the third sample underwent cold work-hardening prior to reaction with deuterium. From the analysis, the vacuum heat-treated sample was found to be more resilient to hydriding at the nucleation and growth stage, exhibiting a reduced number of nucleation points when compared to the as-cast uranium. The work-hardened sample was observed to be more susceptible to H2 corrosion, displaying very dissimilar hydriding behaviour when compared to the other.

      PubDate: 2017-11-16T13:09:55Z
       
  • Effect of Anodic Potential on the Electrochemical Response of Passive
           Layers Formed on the Surface of Coarse- and Fine-Grained Pure Nickel in
           Borate Buffer Solutions
    • Abstract: Publication date: Available online 13 November 2017
      Source:Corrosion Science
      Author(s): Arash Fattah-alhosseini, Majid Naseri, Seyed Omid Gashti, Saeed Vafaeian, Mohsen K. Keshavarz
      In the present work, the role of cold deformation and anodic potential on the electrochemical response of pure nickel in borate buffer solutions were investigated. The application of cold deformation gave rise to a more localized microstructure that contained a greater number of fine grains. In order to investigation of the electrochemical response of specimens, potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), and Mott–Schottky (M–S) analysis were performed. As a result, with increasing of applied potential, the polarization resistance and passive film thickness decreased. Also, density of electron acceptor at passive layer decreased by increasing of applied potential.
      Graphical abstract image

      PubDate: 2017-11-16T13:09:55Z
       
  • The golden alloy Cu-5Zn-5Al-1Sn: a multi-analytical surface
           characterization
    • Abstract: Publication date: Available online 13 November 2017
      Source:Corrosion Science
      Author(s): Tingru Chang, Inger Odnevall Wallinder, Ying Jin, Christofer Leygraf
      The golden alloy Cu-5Zn-5Al-1Sn has found many applications because of its appearance and resistance to tarnishing. The microstructure and multi-component surface oxide of Cu-5Zn-5Al-1Sn have been investigated through a multi-analytical approach. Compared to commercial Cu metal, Cu-5Zn-5Al-1Sn has significantly smaller grains and higher fraction of coherent twin boundaries. The 5–10nm thick oxide formed after diamond polishing has four identified sub-oxides all contributing to the overall corrosion resistance. Cu2O is mainly located in the outer part, followed by ZnO, SnO2 and Al2O3 closer to the alloy substrate. The latter three possess barrier properties, while Cu2O exhibits a more complex structure.

      PubDate: 2017-11-16T13:09:55Z
       
  • Effects of metal cations on mild steel corrosion in 10mM Cl− aqueous
           solution
    • Abstract: Publication date: Available online 13 November 2017
      Source:Corrosion Science
      Author(s): Md. Saiful Islam, Kyohei Otani, Masatoshi Sakairi
      The influences of metal cations on the corrosion of mild steel in 10mM Cl− aqueous solutions were investigated by electrochemical techniques and immersion tests. Immersion tests and electrochemical impedance spectroscopy (EIS) results showed that Zn2+ has a significant effect on corrosion inhibition. Surface morphological inspection also showed the smooth surface of specimen immersed in Zn2+ containing solution. Analysis of X-ray photoelectron spectroscopy showed that Zn2+ was incorporated in the oxide films by making a strong bond. It is supposed that Zn2+ forms a very effective shielding film which can inhibit the electrochemical reactions, and consequently lowers the corrosion rate.

      PubDate: 2017-11-16T13:09:55Z
       
  • 1 Preparation of Super-hydrophobic Micro-needle CuO Surface as a Barrier
           against Marine Atmospheric Corrosion
    • Abstract: Publication date: Available online 12 November 2017
      Source:Corrosion Science
      Author(s): Wenwen Dou, Jiajia Wu, Tingyue Gu, Peng Wang, Dun Zhang
      A super-hydrophobic (SH) CuO surface was prepared on copper using chemical etching followed by fluorination treatment. The relationship between surface morphology and hydrophobicity was investigated. When the etching time varied from 5 to 120min, morphology changed from sparse sharp needles to dense sharp needles, and then to a stamen-like structure with flower-like clusters. All these surfaces were SH with the dense micro-needle surface (10min etching) the best. This SH surface made salt (NaCl) particles deliquesce and roll away. Electrochemical tests showed that it reduced corrosion in a 3.5% (w/w) NaCl solution by more than 102 times.
      Graphical abstract image

      PubDate: 2017-11-16T13:09:55Z
       
  • Comparison of hydrogen embrittlement susceptibility of three cathodic
           protected subsea pipeline steels from a point of view of hydrogen
           permeation
    • Abstract: Publication date: Available online 12 November 2017
      Source:Corrosion Science
      Author(s): Timing Zhang, Weimin Zhao, Tingting Li, Yujiao Zhao, Qiushi Deng, Yong Wang, Wenchun Jiang
      Revealing the hydrogen permeation behavior in steel is the foundation to analyze hydrogen induced fracture. Herein, slow strain rate tension tests were used to investigate the susceptibility of X70, X80 and X100 steel to hydrogen embrittlement induced by cathodic polarization, and the subsurface hydrogen concentration (C 0) of three steels was accurately determined by two kinds of hydrogen permeation tests. Results showed that the HE index range of ductile-to-brittle transition should be determined by fracture analysis. The C 0 increased in turn from X70, X80 to X100 at any given applied potential, that’s why X100 presented the highest hydrogen embrittlement susceptibility.

      PubDate: 2017-11-16T13:09:55Z
       
  • Electrochemical Profiling of Multi-Clad Aluminium Sheets used in
           Automotive Heat Exchangers
    • Abstract: Publication date: Available online 11 November 2017
      Source:Corrosion Science
      Author(s): Kirill Bordo, Visweswara C. Gudla, Lionel Peguet, Andreas Afseth, Rajan Ambat
      A combination of glow discharge optical emission spectroscopy sputtering and local electrochemical measurements was used to determine electrochemical changes upon brazing in a multi-layered Aluminium sheet (AA4343/AA3xxx/AA4343) with an additional low-Cu (AA3xxx) interlayer. E corr values from potentiodynamic polarization, galvanic corrosion behaviour by ZRA, microstructure and composition by SEM and TEM were investigated and compared to those obtained for sheet without the interlayer. Inward diffusion of Si from clad, and outward diffusion of Cu from core are found to degrade the corrosion properties of conventional sheet, whereas presence of interlayer reduced outward diffusion of Cu and hence improved corrosion protection.
      Graphical abstract image

      PubDate: 2017-11-16T13:09:55Z
       
  • Controlled delivery of multi-substituted triazole by metal-organic
           framework for efficient inhibition of mild steel corrosion in neutral
           chloride solution
    • Abstract: Publication date: Available online 11 November 2017
      Source:Corrosion Science
      Author(s): Huiwen Tian, Weihua Li, Ang Liu, Xiang Gao, Peng Han, Rui Ding, Cuizhen Yang, Dapeng Wang
      A triazole-based compound containing multiple active groups and promising strategy of controlled delivery by metal-organic framework were developed for corrosion inhibition of mild steel in 0.5M NaCl solution. Electrochemical analysis showed the inhibitor effectively suppressed both the anodic and cathodic reactions by forming an protective film, achieving the efficiency around 98% at an optimal concentration of 5.5×10−4 M. Impressively, the inhibitor loading onto MOF particles leads to a reduction of optimal dosage by a factor of 4. The equivalent concentration of the loaded inhibitor is less than 1.3×10−4 M. The results of electrochemical quartz crystal microbalance measurement and surface characterization indicated the controlled delivery largely enhances the inhibition ability by giving rise to densification of protective film. Combined spectroscopic analysis provided direct evidences for the inhibitor-MOF interaction and film formation mechanism.

      PubDate: 2017-11-16T13:09:55Z
       
  • 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
       
  • High temperature oxidation behaviour of Ag–36.35wt.% Zn and
           Ag–38.50wt.% Zn–0.60wt.% Al
    • Abstract: Publication date: Available online 10 November 2017
      Source:Corrosion Science
      Author(s): S. Chandra-ambhorn, P. Chumpanya
      Ag–36.35wt.% Zn and Ag–38.50wt.% Zn–0.60wt.% Al were oxidised in air at 450–650°C up to 48h. The oxidation kinetics of both alloys were parabolic with the lower rate constant for the latter alloy. After oxidation for 48h, thermal oxide scale on Ag–36.35wt.% Zn was ZnO at all studied temperatures. When 0.60wt.% Al was added to Ag–38.50wt.% Zn, ZnO and ZnAl2O4 were formed at all studied temperatures. Al2O3 was evidently observed at 550 and 650°C. The formation of Al-containing oxides helped reduce the oxidation rate of Ag–38.50wt.% Zn–0.60wt.% Al.

      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
       
  • Galvanic effect of magnetite on the corrosion behavior of carbon steel in
           deaerated alkaline solutions under flowing conditions
    • Abstract: Publication date: Available online 8 November 2017
      Source:Corrosion Science
      Author(s): Geun Dong Song, Soon-Hyeok Jeon, Yeong-Ho Son, Jung Gu Kim, Do Haeng Hur
      The effect of magnetite on the corrosion of carbon steel was investigated in simulated secondary water of pressurized water reactors at 60°C by using the immersion and electrochemical tests. The corrosion rate of carbon steel was increased by the galvanic coupling with magnetite, and was more accelerated with increasing the area ratio of magnetite to carbon steel. From the electrochemical behavior of carbon steel and magnetite, it was verified that the corrosion of carbon steel is accelerated by a galvanic corrosion mechanism. This phenomenon is expected to be an acceleration factor on the corrosion of carbon steel piping.

      PubDate: 2017-11-16T13:09:55Z
       
  • Electrochemical behaviour of martensitic stainless steel after immersion
           in a H2S-saturated solution
    • Abstract: Publication date: Available online 8 November 2017
      Source:Corrosion Science
      Author(s): Xiaowei Lei, Hongyan Wang, Feixiong Mao, Junping Zhang, Anqing Fu, Yaorong Feng, Digby D. Macdonald
      Time dependent experiments were carried out to study the corrosion behaviour of Super 13Cr martensitic stainless steel after immersion in a H2S-saturated solution. The Point Defect Model was employed to obtain key parameters. With increasing immersion time, the corrosion product layer thickened, but displayed a defective structure. The thickness of the barrier layer decreased with extending the H2S-exposure time, which notably lowered the corrosion resistance. The presence of the corrosion scale resulted in a thinner barrier layer in contrast to that without the scale. With/without the corrosion scale, no semi-conductivity and no passive region was observed for Super 13Cr after 96 h-immersion. The hydrogen ingress during H2S-exposure lowered the passivity of the bare alloy substrate.

      PubDate: 2017-11-08T17:20:58Z
       
  • 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
       
  • IFC - Editorial Board
    • Abstract: Publication date: December 2017
      Source:Corrosion Science, Volume 129


      PubDate: 2017-11-02T03:44:31Z
       
  • Simultaneous oxidation and carburization of a Fe-9Cr alloy under different
           oxygen pressures at 800°C
    • Abstract: Publication date: December 2017
      Source:Corrosion Science, Volume 129
      Author(s): J. Shen, S. Liu, X.H. Guo, Y. Niu
      A model Fe-9Cr alloy was exposed to various H2 CO2 CH4 mixtures providing different oxygen pressures and carbon activities at 800°C. Three oxidation modes and three oxygen pressure ranges have been observed. At low pressures (Range I) only thin external Cr2O3 scales formed. An intermediate range (Range II) produced an internal precipitation of Cr2O3 and Cr carbide without an external scale. Higher pressures (Range III) produced external FeO x scales plus an internal oxidation of Cr. Two critical oxygen pressures for the transitions between the three oxidation modes were observed and also calculated in reasonable agreement with the experimental results.

      PubDate: 2017-11-02T03:44:31Z
       
  • Corrosion of carbon steel in the presence of oilfield deposit and
           thiosulphate-reducing bacteria in CO2 environment
    • Abstract: Publication date: December 2017
      Source:Corrosion Science, Volume 129
      Author(s): Laura L. Machuca, Katerina Lepkova, Adrian Petroski
      The effect of thiosulphate reducing bacteria (TRB) on the corrosion of carbon steel covered by a complex oilfield deposit has been assessed in CO2-containing seawater at 55°C. TRB were found to significantly accelerate localized corrosion at deposited steels. This effect of TRB on under-deposit corrosion (UDC) was related to metabolic production of corrosive compounds, such as sulphide and acidic species, through biodegradation of organic matter and thiosulphate reduction in the deposit. TRB were also found to promote accumulation of hydrocarbons and metals in the deposit. Results highlight that microbial-deposit interactions are a noteworthy process in corrosion of oilfield facilities.

      PubDate: 2017-11-02T03:44:31Z
       
  • High-temperature oxidation of sintered austenitic stainless steel
           containing boron or yttria
    • Abstract: Publication date: December 2017
      Source:Corrosion Science, Volume 129
      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: 2017-11-02T03:44:31Z
       
  • Fabricating an epoxy composite coating with enhanced corrosion resistance
           through impregnation of functionalized graphene oxide-co-montmorillonite
           Nanoplatelet
    • Abstract: Publication date: December 2017
      Source:Corrosion Science, Volume 129
      Author(s): Morteza Ganjaee Sari, Mohammadreza Shamshiri, Bahram Ramezanzadeh
      This study aims at developing an epoxy-based nanocomposite coating with enhanced corrosion protection properties employing different mixtures of graphene oxide (GO) and Cloisite 20A montmorillonite (MMT) nanoclay (NC) particles functionalized with aminosilane and 1,4-butanediol diglycidyl ether (BDDE) molecules. The effects of modified NC (MNC), modified GO (MGO) and various mixtures of MNC-MGO on the corrosion resistance of epoxy coating were studied. Results revealed the enhancement of surface modified GO and NC particles stability in the epoxy matrix. It was also revealed that the mixture of MNC-MGO (30:70%w/%w) resulted in the highest improvement of the epoxy coating corrosion resistance.

      PubDate: 2017-11-02T03:44:31Z
       
  • Microstructure-sensitive modeling of pitting corrosion: Effect of the
           crystallographic orientation
    • Abstract: Publication date: December 2017
      Source:Corrosion Science, Volume 129
      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: 2017-11-02T03:44:31Z
       
  • Micro-electrochemical investigation on the role of Mg in sacrificial
           corrosion protection of 55mass%Al-Zn-Mg coated steel
    • Abstract: Publication date: December 2017
      Source:Corrosion Science, Volume 129
      Author(s): Shimpei Tokuda, Izumi Muto, Yu Sugawara, Michiyasu Takahashi, Masamitsu Matsumoto, Nobuyoshi Hara
      The effects of Mg on the anodic dissolution behavior of the 55mass%Al-Zn coating layer were determined by in situ observation during galvanostatic polarization. The Zn-‍rich phases were observed to corrode at lower potentials than the dissolution potential region of the Al-rich matrix phases, and the dissolution duration of the Zn-rich phases was prolonged by Mg addition. Moreover, the corrosion products of the 55mass%Al-Zn-Mg coating layer were suggested to inhibit the oxygen reduction reaction on the steel substrate. The sacrificial corrosion protection mechanisms due to the addition of Mg to the 55mass%Al-‍Zn coating layer were discussed.

      PubDate: 2017-11-02T03:44:31Z
       
  • Role of volatilization of molybdenum oxides during the cyclic oxidation of
           high-Mo containing Ni-based single crystal superalloys
    • Abstract: Publication date: December 2017
      Source:Corrosion Science, Volume 129
      Author(s): Lu Qin, Yanling Pei, Shusuo Li, Xinbao Zhao, Shengkai Gong, Huibin Xu
      The cyclic oxidation behavior of two high-Mo containing Ni-based single crystal superalloys with different Al contents at 1100°C has been investigated. The higher formation tendency of the continuous and dense α-Al2O3 scales in the alloy with higher Al content can prevent the volatilization of MoO3 through decreasing the diffusion of Mo. Besides the spallation of oxide scales, the volatilization of refractory metal oxides can also result in the mass loss of the samples in the cyclic oxidation tests, especially in the Ni-based single crystal superalloys with high contents of refractory elements and weak formation tendency of continuous α-Al2O3 scales.

      PubDate: 2017-11-02T03:44:31Z
       
  • Development of growth and thermal stresses in NiO scale on pure Ni: The
           metal nanocrystallization effect
    • Abstract: Publication date: December 2017
      Source:Corrosion Science, Volume 129
      Author(s): X. Wei, X. Peng, X. Wang, Z. Dong
      Ni sheet samples with one side normally coarse-grained and the other side nano-grained have been prepared for two-sided oxidation deflection testing. The sample is sharply deflected during heating up to 800°C in air, because of a significant nano-grain growth. Deflection also occurs during the subsequent isothermal oxidation and cooling, due to the difference in the development of the growth and thermal stresses in the thermally-grown NiO on the nanocrystalline Ni. The latter is interpreted based on the investigation of the Ni nanocrystallization effect on the evolution of the microstructure of the NiO scale with time.

      PubDate: 2017-11-02T03:44:31Z
       
  • Formation of a phosphate conversion coating on bioresorbable Mg-based
           metallic glasses and its effect on corrosion performance
    • Abstract: Publication date: Available online 24 October 2017
      Source:Corrosion Science
      Author(s): David Miskovic, Katharina Pohl, Nick Birbilis, Kevin J. Laws, Michael Ferry
      Ternary Mg-Zn-Ca metallic glasses show promise as a bioresorbable implant material. Their susceptibility to relatively rapid corrosion rates, however, requires new ways to reduce their initial rate of corrosion post-implantation. To this end, the application of a simple phosphate conversion coating was studied on Mg66Zn30Ca4 to determine the metallic glasses impact on coating development. A model for coating growth is proposed. The results demonstrate corrosion resistance can be improved by an order of magnitude in simulated body fluid, with a significant reduction in anodic kinetics. Furthermore, the mechanical reliability under a compressive load is improved two-fold, despite substrate relaxation due to coating.

      PubDate: 2017-10-26T15:37:27Z
       
  • Role of previously formed corrosion product layers on sulfide-assisted
           corrosion of iron archaeological artefacts in soil
    • Abstract: Publication date: Available online 20 October 2017
      Source:Corrosion Science
      Author(s): C. Rémazeilles, D. Neff, J.A. Bourdoiseau, R. Sabot, M. Jeannin, Ph. Refait
      Iron archeological nails (16th century) were used as representative of the mild steel structures envisaged for the storage of nuclear waste. The influence of sulfide species on the corrosion behavior of the nails was investigated via the thorough description of the modifications undergone by the corrosion products surrounding the metal after re-immersion in deaerated sulfide solution. The only observed modification was the formation of FeS at the corrosion product layer/soil interface. The corrosion product layer, mainly composed of FeCO3, acts as protective barrier, the reactivity of FeCO3 preventing sulfide species to reach the metal and influence the corrosion process.

      PubDate: 2017-10-26T15:37:27Z
       
  • Crystallographic study of hydrogen-induced twin boundary separation in
           type 304 stainless steel under cyclic loading
    • Abstract: Publication date: Available online 20 October 2017
      Source:Corrosion Science
      Author(s): Shohei Ueki, Yoji Mine, Kazuki Takashima
      This study focused on the martensitic transformation during fatigue crack growth in twinned crystals using small compact-tension specimens to elucidate the hydrogen-induced twin boundary separation in type 304 stainless steel. In the uncharged specimen, martensite variants were formed with their habit planes parallel to the most highly shear-stressed slip plane. The crack extended in martensite that was earlier formed ahead of the crack tip and deflected from the twin boundary. Hydrogen-induced twin boundary separation occurred predominantly at the interface between martensite and austenite in a medium stress intensity range. As the stress intensity range increased, martensite variants symmetrically arranged with respect to the twin plane dominated, suggesting that a slip-off crack growth mechanism was facilitated by hydrogen.

      PubDate: 2017-10-26T15:37:27Z
       
  • Macrofouling induced localized corrosion of stainless steel in Singapore
           seawater
    • Abstract: Publication date: Available online 18 October 2017
      Source:Corrosion Science
      Author(s): Daniel J. Blackwood, Chin Sing Lim, Serena L.M. Teo, Xiaoping Hu, Jianjun Pang
      Biofouling induced corrosion of stainless steels grades UNS S31603 and UNS S31254 was investigated at three sites off Singapore for 30months. No corrosion was observed on grade UNS S31254, while the propensity for corrosion by shellfish of UNS S31603 is ranked as oyster>>barnacles>>green mussels. Oysters caused extensive localised corrosion, penetrating 2mm thick plates with 12months with tracks of corrosion several centimetres long. Shallow crevice corrosion was observed under dead barnacles, with an explanation presented for why corrosion is more severe under dead barnacles than live ones. Green mussels did not cause any corrosion.

      PubDate: 2017-10-26T15:37:27Z
       
  • A magnetic field induced undulated surface and the shift of the
           active/passivation transition threshold of iron in a sulfuric acid
           solution
    • Abstract: Publication date: Available online 18 October 2017
      Source:Corrosion Science
      Author(s): Hongjuan Li, Qi Xiong, Zhanpeng Lu, Junjie Chen, Qian Xiao, Xiangkun Ru, Sichun Lin, Jiarong Ma, Zhen Chen
      An unevenly distributed magnetic field caused irreversible electrochemical states of iron in a sulfuric acid solution due to the undulated surface generated by anodic dissolution. The magnetic field affected the activation-passivation transition threshold by modifying the interface reaction rate and surface morphology. The passivation onset potential was increased by decreasing the scan rate under 0.4T, and was insensitive to the scan rate at 0T.

      PubDate: 2017-10-26T15:37:27Z
       
  • IFC - Editorial Board
    • Abstract: Publication date: November 2017
      Source:Corrosion Science, Volume 128


      PubDate: 2017-10-18T10:48:04Z
       
  • A fast, low temperature zinc phosphate coating on steel accelerated by
           graphene oxide
    • Abstract: Publication date: November 2017
      Source:Corrosion Science, Volume 128
      Author(s): Yuhui Xie, Mingzhi Chen, Delong Xie, Li Zhong, Xinya Zhang
      Graphene oxide (GO) is used to accelerate zinc phosphating process on steel. The effect of GO on microstructure and corrosion resistance of phosphate coating is investigated. Experiments show that GO sheets can act as sedimentary beds at the initial stage of phosphating process, which can capture metal ions and thus favor the nucleation of phosphate crystals. When the concentration of GO is optimized to be 1.2g/L, the phosphate coating possesses the most uniform and compact structure and achieves the strongest corrosion resistance. Results demonstrate that GO can effectively accelerate phosphating process and enhance corrosion resistance of phosphate coating.
      Graphical abstract image

      PubDate: 2017-10-18T10:48:04Z
       
  • The role of acetic acid or H+ in initiating crevice corrosion of N80
           carbon steel in CO2-saturated NaCl solution
    • Abstract: Publication date: November 2017
      Source:Corrosion Science, Volume 128
      Author(s): Y.Z. Li, N. Xu, X.P. Guo, G.A. Zhang
      The role of acetic acid (HAc) or H+ in initiating the crevice corrosion of N80 carbon steel in CO2-saturated NaCl solution was studied by weight loss and electrochemical measurements. It is demonstrated that crevice corrosion could be initiated by the concentration difference either HAc or H+ between outside and inside the crevice. The corrosion rate inside the crevice becomes higher than that outside the crevice and the total corrosion rate inside and outside the crevice decreases after connection. Crevice corrosion is more severe in the solution with HAc than that in the solution with H2SO4 at the same pH value.

      PubDate: 2017-10-18T10:48:04Z
       
  • Bio-corrosion behaviour of oxygen diffusion layer on Ti-6Al-4V during
           tribocorrosion
    • Abstract: Publication date: November 2017
      Source:Corrosion Science, Volume 128
      Author(s): R. Yazdi, H.M. Ghasemi, C. Wang, A. Neville
      Oxygen diffusion layers (ODL) on Ti-6Al-4V were produced by thermal oxidation at a temperature of 850°C for three and six hours. ODL formation resulted in a β-Ti to α-Ti transformation, causing an increase in hardness. Polarization and EIS studies in stagnant and tribocorrosion conditions were performed under normal loads of 3–30N in a phosphate buffered saline solution. In a stagnant condition, a passive bilayer film was formed on samples, which led to a low icorr. During tribocorrosion, the formation of a protective tribofilm resulted in a higher Ecorr and a lower icorr in ODLs compared with Ti-6Al-4V.

      PubDate: 2017-10-18T10:48:04Z
       
  • The topology of three-dimensional grain boundary network and its influence
           on stress corrosion crack propagation characteristics in austenitic
           stainless steel in a simulated BWR environment
    • Abstract: Publication date: Available online 18 October 2017
      Source:Corrosion Science
      Author(s): Tingguang Liu, Shuang Xia, Tetsuo Shoji, Qin Bai, Bangxin Zhou, Yonghao Lu
      The intergranular cracking and the grain boundary network along the cracks in an austenitic stainless steel 316L after stress corrosion cracking (SCC) test in simulated BWR water were investigated in terms of three-dimensional characterization. It was found that the twin boundaries not only show a strong resistance to cracking, but they could also prevent their neighboring boundaries from cracking, as the cracking probability is lower for boundaries that have higher fraction of neighboring twin boundaries. The propagation of intergranular SCC can be hindered by triple junctions or quadruple junctions in the presence of twin boundaries.
      Graphical abstract image

      PubDate: 2017-10-18T10:48:04Z
       
  • Improved potentiometric SECM imaging of galvanic corrosion reactions
    • Abstract: Publication date: Available online 16 October 2017
      Source:Corrosion Science
      Author(s): D. Filotás, B.M. Fernández-Pérez, J. Izquierdo, A. Kiss, L. Nagy, G. Nagy, R.M. Souto
      The galvanic corrosion of Zn-Cu systems has been monitored in situ using scanning electrochemical microscopy in the potentiometric mode. Here, the initial studies performed using double-barrel microelectrodes for the simultaneous detection of local pH and Zn ion concentration changes in single lines scans, have been extended to the obtention of 2-D maps of Cu2+ and Zn2+ ions. The construction and calibration of a novel Cu2+ ion selective microelectrode is reported. New scanning algorithms and data evaluation tools have been explored for faster acquisition rates than those limited by the time constants associated to potentiometric response.
      Graphical abstract image

      PubDate: 2017-10-18T10:48:04Z
       
  • Electrochemistry of CO2 corrosion of mild steel: Effect of CO2 on iron
           dissolution reaction
    • Abstract: Publication date: Available online 16 October 2017
      Source:Corrosion Science
      Author(s): Aria Kahyarian, Bruce Brown, Srdjan Nesic
      The kinetics of the iron dissolution reaction was investigated in CO2-saturated acidic sodium chloride solutions. While the effect of CO2 on the iron dissolution reaction during corrosion process has received little attention in the existing literature, the experimental polarization curves obtained in the present study on X65 mild steel suggest that CO2 and/or its related carbonate species are directly involved in the metal dissolution reaction. The presence of CO2 was found to significantly influence the kinetics and the mechanism of the iron dissolution reaction at partial pressures as low as 1bar. The higher corrosion rates observed in CO2-saturated brines as compared to strong acid solutions at the same pH could possibly be explained by the effect of CO2 on the kinetics of the anodic reaction.

      PubDate: 2017-10-18T10:48:04Z
       
  • Phase evolution of EBPVD coated ceria-zirconia nanostructure and its
           impact on high temperature oxidation of AISI 304
    • Abstract: Publication date: Available online 13 October 2017
      Source:Corrosion Science
      Author(s): Aadhavan R., Parthasarathi Bera, Anandan C., Kannan S., Suresh Babu K.
      The present work focusses on the effect of nanocrystalline xCeO2–(1-x)ZrO2 (x=1, 0.75, 0.5, 0.25 and 0 in wt% abbreviated as C100, C75Z25, C50Z50, C25Z75 and Z100) coated by electron beam physical vapour deposition (EBPVD) on AISI 304 and its implication on the high-temperature oxidation protection. The oxidation kinetics indicate that the samples C100, C75Z25 and C50Z50 show 3–4 orders better oxidation protection than uncoated AISI 304. Coating morphology and composition play an important role in developing superior nanostructures against high temperature oxidation. The development of ceria-zirconia coating helps in the realization of structural materials for elevated temperature application.
      Graphical abstract image

      PubDate: 2017-10-18T10:48:04Z
       
  • High temperature isothermal oxidation behavior of NbSi2 coating at
           1000–1450°C
    • Abstract: Publication date: Available online 10 October 2017
      Source:Corrosion Science
      Author(s): Young-Jun Choi, Jin-Kook Yoon, Gyeung-Ho Kim, Woo-Young Yoon, Jung-Man Doh, Kyung-Tae Hong
      Isothermal oxidation behavior of NbSi2 coating grown on Nb substrate was investigated in air at 1000–1450°C. Oxidation rate of NbSi2 coating increased with temperature at 1000–1300°C but opposite trend was observed at 1300–1450°C. Maximum oxidation rate was obtained at 1300°C due to the highest porosity of oxide scale. Lowest oxidation rate was observed at 1450°C due to formation of dense oxide scale by combined effect of volatilization of Nb oxide phase, viscous flow and densification of c-SiO2. Oxidation resistance of NbSi2 coating at these temperatures was governed by some inter-related factors.

      PubDate: 2017-10-11T02:53:32Z
       
  • Effect of inclusions modified by rare earth elements (Ce, La) on localized
           marine corrosion in Q460NH weathering steel
    • Abstract: Publication date: Available online 5 October 2017
      Source:Corrosion Science
      Author(s): Chao Liu, Reynier I. Revilla, Zhiyong Liu, Dawei Zhang, Xiaogang Li, Herman Terryn
      In this work the initial stages of the pitting corrosion in Q460NH weathering steel in a marine environment was studied. To elucidate the effects of inclusions modified by rare earth (RE) elements on pitting corrosion, field emission-scanning electron microscopy-energy dispersive spectrometry (FE-SEM-EDS) analyses, scanning Kelvin probe force microscopy (SKPFM) tests, and a series of immersion tests were conducted. Two main types of inclusions were formed in the steel, and different pit morphologies were observed. The pitting corrosion was initiated by the dissolution of (RE)2O2S-(RE)xSy in both types of inclusions due to the lower potential of this phase compared to the matrix, which indicated that the inclusions in the Q460NH weathering steel had a lower pitting corrosion resistance than the matrix.

      PubDate: 2017-10-11T02:53:32Z
       
  • Eco friendly green inhibitor Gum Arabic (GA) for the corrosion control of
           mild steel in hydrochloric acid medium
    • Abstract: Publication date: Available online 5 October 2017
      Source:Corrosion Science
      Author(s): Khalil Azzaoui, Emiloud Mejdoubi, Shehdeh Jodeh, Abdellatif Lamhamdi, Enrique Rodriguez-Castellón, Manuel Algarra, Abdelkader Zarrouk, Abderrazak Errich, Rachid Salghi, Hassane Lgaz
      Gum Acacia (GA) was evaluated for steel inhibition in acidic medium. Weight loss, EIS, and by polarization potentiodynamic curves were used to test it. GA showed a high efficiency in protecting steel from acid, and found as dependent on its concentration (1.0g/L). AFM allowed comparing the morphology of steel with GA, which was complemented with XPS spectroscopy, which confirmed the complete adsorption of GA by evaluating the surface film composition. Polarization resistance increases when GA concentration does, based on EIS characterization, indicating the formation of a protective layer whereas PDP results showed that, GA behaves as a mixed-type inhibitor.

      PubDate: 2017-10-11T02:53:32Z
       
  • 1,2,3-Triazole derivatives as corrosion inhibitors for mild steel in
           acidic medium: Experimental and computational chemistry studies
    • Abstract: Publication date: Available online 4 October 2017
      Source:Corrosion Science
      Author(s): Qi Ma, Sijun Qi, Xiaohong He, Yongming Tang, Gang Lu
      (1-Benzyl-1H-1,2,3-triazole-4-yl)methanol (BTM) and (1-(pyridin-4-ylmethyl)-1H-1,2,3- triazole-4-yl)methanol (PTM) were prepared and investigated as corrosion inhibitors for mild steel in 1.0M HCl. It is found that PTM functions as more effective inhibitor than BTM in the concentration range of 0.2 −1.0mM. Computational chemistry studies show that the triazole derivatives can adsorb on the mild steel surface by sharing the lone pair electrons of N atoms with iron atoms or by accepting electrons from iron surfaces. Due to its strong interaction with the mild steel surface in aqueous system, the pyridine segment should be responsible for the higher inhibition efficiency of PTM.

      PubDate: 2017-10-11T02:53:32Z
       
 
 
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