Electrochemical corrosion and bioactivity of titanium-hydroxyapatite composites prepared by spark plasma sintering

被引：85

作者：

Anawati ^{[1
]}

Tanigawa, Hiroaki ^{[1
]}

Asoh, Hidetaka ^{[1
]}

Ohno, Takuya ^{[2
]}

Kubota, Masahiro ^{[2
]}

Ono, Sachiko ^{[1
]}

机构：

[1] Kogakuin Univ, Dept Appl Chem, Hachioji, Tokyo 1920015, Japan

[2] Nihon Univ, Dept Mech Engn, Narashino, Chiba 2758575, Japan

来源：

CORROSION SCIENCE | 2013年 / 70卷

基金：

日本学术振兴会;

关键词：

Titanium-hydroxyapatite composite; Polarization; Potentiostatic; SEM/EDX; Corrosion; Interfaces; SIMULATED BODY-FLUID; OXIDE-FILMS; SURFACE; STABILITY; TISSUE; TI;

D O I：

10.1016/j.corsci.2013.01.032

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

The corrosion resistance and bioactivity of titanium-hydroxyapatite (Ti-HA) composites prepared by mechanical alloying (MA) followed by spark plasma sintering were investigated. Potentiodynamic polarization tests showed that Ti composites containing 0-10% HA exhibited higher corrosion resistance than commercially pure Ti. An increase in HA concentration (20-30%) decreased corrosion resistance owing to the craterlike defects induced by ceramic particle detachment. Increasing MA time significantly reduced defect density and improved corrosion resistance. Bioactivity test on Ti HA composites in simulated body fluid revealed the growth of a nano-HA layer, which indicates the high potential of Ti-HA composites for application in biomedical implants. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：212 / 220

页数：9

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