超细晶纯钛材电化学抛光表面生物相容性研究

稀有金属材料与工程, 2013, 42(10): 2053-2056.

超细晶纯钛材电化学抛光表面生物相容性研究

许晓静 ^1, , 盛新兰 ^2, , 张体峰 ^3, , 刘敏 ^4, , 牛小丫 ^5, , 朱利华 ^6,

1.江苏大学,江苏镇江212013

2.江苏大学,江苏镇江212013

3.江苏大学,江苏镇江212013

4.江苏大学,江苏镇江212013

5.江苏大学,江苏镇江212013

6.江苏大学,江苏镇江212013

基金项目: 江苏大学优秀学术青年骨干培养对象基金(1211110001) 江苏省高校自然基金重大项目(11KJA430004)

关键词：超细晶纯钛材 , 电化学抛光 , 表面形貌 , 抗腐蚀性能 , 生物活性

Biocompatibility of Electrochemically Polished Surface of Ultrafine-Grained Titanium

Xu Xiaojing ^1, , Sheng Xinlan ^2, , Zhang Tifeng ^3, , Liu Min ^4, , Niu Xiaoya ^5, , Zhu Lihua ^6,

1.江苏大学,江苏镇江212013

2.江苏大学,江苏镇江212013

3.江苏大学,江苏镇江212013

4.江苏大学,江苏镇江212013

5.江苏大学,江苏镇江212013

6.江苏大学,江苏镇江212013

Keywords： ultrafine-grained Ti , electrochemical polishing , surface morphology , corrosion resistance , bioactivity

研究了常规纯钛材和超细晶纯钛材电化学抛光表面的形貌、抗腐蚀性能、微动摩擦磨损性能和生物活性.结果表明:与常规纯钛材电化学抛光表面相比,超细晶纯钛材电化学抛光表面具有更多小尺寸(纳米尺度)蚀坑,更高的抗模拟体液电化学腐蚀性能(后者的腐蚀速率是前者的2/5),更低的摩擦系数0.12 (vs.0.15)、更高的耐磨性(后者的磨痕宽度是前者的4/5),以及较高的生物活性,模拟体液中Ca-P层的生长速率21.03 g/m2 (vs.18.40 g/m2).分析认为,以上性能变化是纯钛材组织超细化提高其晶体缺陷(内能)所致.

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