Influence of the annealing treatment on the structure, morphology, and corrosion resistance of sputtered Zr-Ti-Si-O coatings used for biomedical applications.

Autor: Cotrut, C. M., Braic, L., Vranceanu, D. M., Kiss, A., Dinu, M., Balaceanu, M., Braic, V., Vladescu, A.
Předmět:
Zdroj: Materials & Corrosion / Werkstoffe und Korrosion; May2017, Vol. 68 Issue 5, p552-559, 8p
Abstrakt: The aim of the present article is to investigate the corrosion resistance of the Zr-Ti-Si-O coatings (as-deposited and annealed) as possible candidate as new biocompatible material. The coatings have been characterized in terms of elemental and phase composition, roughness and corrosion resistance in simulated body fluid (SBF) at 37 °C. The coatings, with a compositional ratio O/(Zr + Ti + Si) of 1.38, were found to consist of a mixture of ZrTiO4, ZrSiO4, Ti2O3, and SiOx phases. The samples annealed in O2 atmosphere at 1100 °C for 30 min resulted in improved crystallinity, increased surface area, surface roughness, and skewness. The results of the electrochemical tests revealed that Zr-Ti-Si-O coatings had improved the corrosion resistance to the aggressive attack of the SBF as compared to the bare Ti6Al4V alloy, the best results being obtained on annealed coatings. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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