Fabrication, degradation behavior and cytotoxicity of nanostructured hardystonite and titania/hardystonite coatings on Mg alloys
作者： H.R. Bakhsheshi-Rad , E. Hamzah , M. Kasiri-Asgarani , S. Jabbarzare , M. Daroonparvar
DOI: 10.1016/J.VACUUM.2016.03.021
关键词:
摘要: Abstract In this study, nanostructured hardystonite (HT) and titania (TiO 2 )/hardystonite dual-layered coatings were deposited on biodegradable Mg Ca Zn alloy via physical vapor deposition (PVD) combined with electrophoretic (EPD). Although a single layer nano-HT coating can decrease the corrosion rate from 1.68 to 1.02 mm/year, due presence of porosities microcracks, cannot sufficiently protect substrate. contrast, resistance is further improved by using nano-TiO underlayer since it was smooth, very uniform compact higher contact angle (52.30°). addition, MTT assay showed viability MC3T3-E1 /HT coatings. The results demonstrated that two-step surface modification both cytocompatibility alloy, hence making feasible for orthopedic applications.
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