Materials and Corrosion

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Online ISSN: 1521-4176

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Recently Published Articles

  1. Solid solution treatment on strength and corrosion of biodegradable Mg6Ag wires

    P. Maier, F. Zimmermann, M. Rinne, G. Szakács, N. Hort and C. Vogt

    Version of Record online: 17 JUL 2017 | DOI: 10.1002/maco.201709502

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    Solution heat treatment improves corrosion resistance of Mg6Ag wires by dissolving second phases resulting in less microgalvanic corrosion potential and reducing twin boundaries, which are found in the as-drawn condition. The corrosion rate decreases strongly by the heat treatment resulting in higher remaining mechanical properties. ICP-OES is used to describe time depending corrosion mechanism.

  2. TGA-MS study of steam oxidation resistance of HCM12A steel at 750 and 800 °C

    S. I. Castañeda, J. L. Marulanda and F. J. Pérez

    Version of Record online: 12 JUL 2017 | DOI: 10.1002/maco.201709498

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    Initial oxidation stages of the ferritic/martensitic HCM12A steel at 750 and 800 °C in Ar + 40%H2O for 190 h were studied in a closed steam loop by means of mass spectrometry (MS) and thermogravimetric analysis (TGA). TGA measures verified that mass gained by the HCM12A oxidized steel at 750 °C was up to two times lower than for HCM12A oxidized steel at 800 °C.

  3. High temperature corrosion in molten solar salt: The role of chloride impurities

    A. S. Dorcheh, R. N. Durham and M. C. Galetz

    Version of Record online: 12 JUL 2017 | DOI: 10.1002/maco.201609300

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    The corrosion behavior of low-chromium steel X20CrMoV11-1 and high chromium stainless steel SS316 was studied in molten solar salt (60%NaNO3-40%KNO3) with two different chloride impurity levels. Result indicated accelerated corrosion of the low-Cr steel in the high chloride salt while SS316 showed even enhanced corrosion resistance in the presence of higher chloride impurities.

  4. Salt-induced iron corrosion under evaporating sessile droplets of aqueous sodium chloride solutions

    V. Soulié, F. Lequien, F. Ferreira-Gomes, G. Moine, D. Feron, P. Prene, H. Moehwald, T. Zemb and H. Riegler

    Version of Record online: 7 JUL 2017 | DOI: 10.1002/maco.201609319

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    The corrosion process induced by evaporation of sessile droplets from aqueous NaCl solutions on planar iron surfaces was quantitatively investigated. The spatial distribution of the salt inside the evaporating sessile droplet, which is influenced by the initial salt concentration in the droplet bulk, is correlated to the localization of the anodic and cathodic reactions at the electrolyte–metal interface.

  5. Influence of test parameters of potentiodynamic current density measurements on the determination of the pitting corrosion resistance of austenitic stainless steels

    B. Lorsbach and E. Schmitz

    Version of Record online: 7 JUL 2017 | DOI: 10.1002/maco.201709602

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    The influences of test parameters on the determination of the electrochemical pitting corrosion resistance were tested. The main result was that the agitation/flow rate had the greatest impact, with stagnant conditions giving very conservative results, followed by imax, which had an influence on the repassivation potential.

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