Materials and Corrosion

Cover image for Vol. 67 Issue 7

Online ISSN: 1521-4176

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Recently Published Articles

  1. Effect of gas flow rate on oxidation behaviour of alloy 625 in wet air in the temperature range 900–1000 °C

    P. Huczkowski, W. Lehnert, H.-H. Angermann, A. Chyrkin, R. Pillai, D. Grüner, E. Hejrani and W. J. Quadakkers

    Version of Record online: 13 JUL 2016 | DOI: 10.1002/maco.201608831

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    During exposure of alloy 625 in wet air at 900–1000 °C chromium loss due to formation of volatile Cr species increases with increasing gas flow rate up to the maximum considered value of 6 m/s. Geometrical factors of the test specimen substantially affected the extent of volatile species formation; especially the specimen leading edge exhibited more extensive formation of volatile Cr species than other specimen areas.

  2. Influence of plasma electrolytic oxidation coatings on fatigue performance of AZ31 Mg alloy

    M. Klein, X. Lu, C. Blawert, K. U. Kainer, M. L. Zheludkevich and F. Walther

    Version of Record online: 12 JUL 2016 | DOI: 10.1002/maco.201609088

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    Plasma electrolytic oxidation (PEO) is a promising surface treatment process to improve the corrosion resistance of Mg alloys. However, PEO coatings can have negative impact on fatigue and corrosion fatigue properties, which are also important for many applications. The paper deals with the influence of different PEO coatings on the corrosion fatigue behavior using the example of AZ31 Mg alloy.

  3. Corrosion mechanism of CuZn21Si3P in aggressive tap water

    F. Seuss, N. Gaag and S. Virtanen

    Version of Record online: 12 JUL 2016 | DOI: 10.1002/maco.201609018

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    Exposure tests of CuZn21Si3P in drinking water and dezincification test solution have revealed good dezincification resistance of the lead-free brass CuZn21Si3P. To clarify the underlying mechanism, electrochemical measurements in tap water and surface characterisation of samples exposed to drinking water were performed.

  4. Influence of Li addition to passivity behavior of pure Al in NaCl acidic solution

    H. N. Wang, C. Z. Liu, L. Lu, R. S. Li and D. Lin

    Version of Record online: 12 JUL 2016 | DOI: 10.1002/maco.201609083

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    Li, with high chemical reactivity, could participate into the formation of passive films by Li ions filled in the lattice interstitial position of Al2O3. Incorporation of Li in the passive films decreased oxygen vacancies and increased its Fermi energy, which increased passivity resistance of pure Al.

  5. Measurement and GIS-based spatial modelling of copper corrosion in different environments in Europe

    K. Slamova and M. Koehl

    Version of Record online: 12 JUL 2016 | DOI: 10.1002/maco.201608957

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    Copper corrosion was assessed at 17 European test sites with different environmental conditions and tested against other international corrosion datasets. In a second approach, GIS-based spatial modelling of copper corrosion in Europe according to the corrosivity function from ISO 9223/2012 was performed and compared with the measured results.

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