Materials and Corrosion

Cover image for Vol. 67 Issue 6

Online ISSN: 1521-4176

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Recently Published Articles

  1. Characterization of self-assembled layers made with stearic acid, benzotriazole, or 2-mercaptobenzimidazole on surface of copper for corrosion protection in simulated urban rain

    G. Žerjav, A. Lanzutti, F. Andreatta, L. Fedrizzi and I. Milošev

    Version of Record online: 24 JUN 2016 | DOI: 10.1002/maco.201608954

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    Self-assembled combined stearic acid/inhibitor (2-MBI and BTAH) layers were prepared. They provide better corrosion protection and higher hydrophobicity than individual layers. GDOES and EDXS were employed to analyze the composition of the layers. Long-term corrosion tests in spray chamber showed that combined stearic acid/inhibitor (2-MBI and BTAH) layers act as effective Cu corrosion inhibitors.

  2. Use of SVET to evaluate corrosion resistance of heat tinted stainless steel welds and effect of post-weld cleaning

    N. Fuertes, V. Bengtsson, R. Pettersson and M. Rohwerder

    Version of Record online: 24 JUN 2016 | DOI: 10.1002/maco.201609048

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    Heat tints on stainless steels are known to have a detrimental effect on the corrosion resistance of the welded joints. In this article, a relation between the level of discolouration, thickness, composition and corrosion resistance has been done. Scanning vibrating electrode technique demonstrated that heat tints dissolve electrochemically and pickling is the only post-weld cleaning technique that removes the anodic activity over the welded joint.

  3. Modeling the influence of pitting corrosion on the mechanical properties of steel reinforcement

    K. Andisheh, A. Scott and A. Palermo

    Version of Record online: 22 JUN 2016 | DOI: 10.1002/maco.201508795

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    A time-dependent pit depth model was developed to evaluate the effects of localized corrosion on the properties of reinforcing bars. The results from experimental testing, using mechanically produced hemispherical indentations to simulate pitting corrosion, clearly showed the influence of degree of corrosion on both the tensile strength and ductility of the steel reinforcing.

  4. Influence of cerium(III) ions on corrosion of TRIP 800 steel in hydrochloric acid solution

    F. Rosalbino and G. Scavino

    Version of Record online: 21 JUN 2016 | DOI: 10.1002/maco.201608966

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    Ce(III) was studied for its corrosion inhibition property on the corrosion of TRIP 800 C-Mn-Si steel in 0.5 M hydrochloric acid at 25 °C by potentiodynamic polarization and EIS techniques. SEM was used to examine the specimen surface. A model for the corrosion process mechanism and inhibition by Ce(III) salt for TRIP 800 steel in the tested medium is proposed.

  5. Hydrogen embrittlement of high strength steel under in situ corrosive charging conditions and tensile load

    R. Scharf, A. Muhr, K.-H. Stellnberger, J. Faderl, C. Holzer and G. Mori

    Version of Record online: 21 JUN 2016 | DOI: 10.1002/maco.201508655

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    In this study, punched hole specimens of ultra-high strength steel grades for constant load testing with in situ hydrogen charging were used to quantify the effect of different corrosive conditions. Fluent or stagnant electrolyte (5% NaCl, pH 2, 7, and 12) conditions were established and time to failure was recorded as a function of applied tensile stress. Bare and electrolytically galvanized specimens were used.