期刊
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
卷 20, 期 7, 页码 1271-1277出版社
SPRINGER
DOI: 10.1007/s11665-010-9772-4
关键词
biomaterials; corrosion; EIS; SBF solution; SEM; beta-Ti alloy
资金
- Indian Council for Medical Research (ICMR), New Delhi
Ti-15Mo (beta-Ti) alloy was subjected to chemical followed by thermal treatment for the enhancement of in vitro bioactivity and corrosion resistance. The surface-modified specimens were characterized using scanning electron microscopy (SEM) and energy dispersive x-ray analysis (EDAX). The results indicated the formation of nanoporous layer and flake-like structure developed during chemical and subsequent thermal treatments. The in vitro bioactivity of the surface-treated beta-Ti alloy was evaluated by immersing in simulated body fluid (SBF) solution. The formation of apatite particles was confirmed using Fourier transform-infrared spectroscopy, SEM, and EDAX analyses. Moreover, the electrochemical behavior of surface-modified specimens in SBF solution was evaluated using potentiodynamic polarization and electrochemical impedance spectroscopy. The results revealed that the surface-modified specimens exhibited higher potential value and lower current density when compared to untreated specimen. The EIS studies showed the formation of new layer, indicating the growth of apatite-like particles.
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