Biocompatibility of Electrochemically Polished Surface of Ultrafine-Grained Titanium

被引:0
|
作者
Xu Xiaojing [1 ]
Sheng Xinlan [1 ]
Zhang Tifeng [1 ]
Liu Min [1 ]
Niu Xiaoya [1 ]
Zhu Lihua [1 ]
机构
[1] Jiangsu Univ, Zhenjiang 212013, Peoples R China
关键词
ultrafine-grained Ti; electrochemical polishing; surface morphology; corrosion resistance; bioactivity; TECHNOLOGY;
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The surface morphology, corrosion resistance, fretting friction, wear properties and bioactivity of electrochemically polished surface on conventional Ti and ultrafine-grained Ti were investigated. The results show that compared to the electrochemically polished surface of conventional Ti, the electrochemically polished surface of ultrafine-grained titanium has more nano-scale corrosion pits, higher corrosion resistance (corrosion rate of the latter is 2/5 of the former) in the Kokubo simulated body fluid, lower friction coefficient (0.12 vs. 0.15), higher wear resistance (wear scar width of the latter is 4/5 of the former), and a slightly higher bioactivity (growth rate of Ca-P layer in simulated body fluid about 21.03 vs. 18.40 g/m(2)). It is believed that the above mentioned improvements were caused by the increase of crystal defects (internal energy) due to ultrafine microstructure.
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页码:2053 / 2056
页数:4
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