Materials and Corrosion
© WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Online ISSN: 1521-4176
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- 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
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.
- 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
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.
- 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
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.
- 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
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.