Materials and Corrosion

Cover image for Vol. 68 Issue 3

Online ISSN: 1521-4176

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Recently Published Articles

  1. Increasing corrosion resistance of a ZrTi alloy with a bioinspired coating with low porosity

    M. Vardaki, D. Ionita, A. B. Stoian and I. Demetrescu

    Version of Record online: 17 MAR 2017 | DOI: 10.1002/maco.201609408

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    Zr and its alloy have become more interesting in biomedical research due to their high biocompatibility and low toxic effects. Hydroxyapatite-chitosan bioinspired coatings were elaborated to further increase biocompatibility and in the same time increasing the corrosion resistance of the alloy. Altering the ratios of hydroxyapatite and chitosan leads to significant differences in corrosion resistance.

  2. Non-destructive indication of delaminations under thick organic coatings using active IR-thermography

    G. Schmitt, C. Lenzmann, N. Schneider and R. Lobnig

    Version of Record online: 17 MAR 2017 | DOI: 10.1002/maco.201609333

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    The present paper presents a new non-destructive test (NDT) method for detecting delaminations and blisters in or under organic coatings with thicknesses up to 6 mm already at stages when the defects are not yet visible. This is accomplished by active IR thermographic methods with induction and/or optically excited lock-in thermography.

  3. Predictive modeling of long-time crevice evolution at e-coat defects under climate chamber test conditions

    N.-C. Bösch, D. Höche, A. Mittelbach and K. U. Kainer

    Version of Record online: 3 MAR 2017 | DOI: 10.1002/maco.201609202

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    A new modeling approach for corrosion simulations addresses the requirements of the industry to handle long simulated time scales and big geometries by reducing the complex electrochemical description to empirical data in the form of digitalized polarization curves and Tafel like fits.

  4. Evaluation of titanium carbide thin film coatings on WC-Co following surface microstructure treatments

    C. Tanaka, T. Saito, N. Okamoto, S. Suzuki, A. Kitajima and K. Higuchi

    Version of Record online: 1 MAR 2017 | DOI: 10.1002/maco.201609244

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    The effects of acid or radio-frequency (RF) CF4 plasma pre-treatments before a sputtered titanium carbide (TiC) hard coating thin film were investigated to increase the adhesion strength of TiC on WC-16wt%Co substrate. The adhesion strength was maximal, with a surface roughness of Ra ≈ 150 nm, with CF4 and aqua regia treatments.

  5. Corrosion performance and mechanical properties of friction stir welded AA2024-T3 joints under different corrosion solution exposure

    N. Li, W. Y. Li, X. W. Yang and N. D. Alexopoulos

    Version of Record online: 1 MAR 2017 | DOI: 10.1002/maco.201609346

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    Aluminum alloy 2024-T3 sheets were friction stir welded (FSWed) and the microstructure in the thermo-mechanically affected zone (TMAZ) and stir zone (SZ) were characterized. The effect of corrosion exposure on the joints was evaluated by immersion tests as well as electrochemical measurements. The results indicate that TMAZ and SZ of the FSWed joints present different corrosion performances for the three corrosion solutions tested.