کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5437881 | 1398178 | 2017 | 8 صفحه PDF | دانلود رایگان |
Titanium dioxide (TiO2) coating with an enhanced anticorrosion properties and bioactivity was developed by doping it with calcium ions through a sol-gel method. The effect of annealing temperature, anions, as well as calcium ions concentration on microstructural and anticorrosion properties of Ca-doped TiO2 coatings have been investigated. The phase composition and morphology of the coatings were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). The corrosion resistance of M30NW biomedical alloy coated with Ca-doped TiO2 coatings was evaluated using electrochemical methods in conditions similar to the normal physiological environments (PBS solution, pH 7.4, temperature of 37 °C). The obtained results show that the annealing temperature and the source of calcium ions influence the anticorrosion properties of Ca-doped TiO2 coatings. The best anticorrosion properties were registered for coatings with the highest concentration of Ca ions. At the same time all the examined coatings presented good bioactivity in SBF solution test.
Journal: Ceramics International - Volume 43, Issue 16, November 2017, Pages 13735-13742