采用动电位扫描技术研究了新型医用Ti12.5Zr2.5Nb2.5Ta (TZNT)钛合金以及另外三种钛合金在林格氏溶液中的腐蚀行为,并对合金表面形成的钝化膜进行了分析,用皮下埋植试验评价了四种合金的生物相容性.结果表明:与另外三种合金相比,TZNT合金更易进入钝化状态;其钝化电位区间最宽,维钝电流较小,其表面的钝化膜更稳定,具有更优异的耐腐蚀性能;与Ti6Al4V和Ti6Al7Nb合金相比,TZNT和TA2合金植入白鼠体内4周和8周后无论是炎细胞密度还是植入物周围的纤维膜厚度均有所降低,具有良好的生物相容性.
所属栏目
材料性能及其应用上海市青年科技启明星计划资助项目(08QA14035)
收稿日期
2009/9/42010/5/15
作者单位
李军:上海工程技术大学材料工程学院, 上海 201620
陈杜娟:西北有色金属研究院, 西安 710016
备注
李军(1977-),男,内蒙古乌兰察布人,副教授,博士.
引用该论文:
LI Jun,CHEN Du-juan,LI Zuo-chen.Corrosion Resistance and Biocompatibility of A New Type of Medical Titanium Alloy Ti12.5Zr2.5Nb2.5Ta[J].Materials for mechancial engineering,2010,34(10):55～58
李军,陈杜娟.新型医用Ti12.5Zr2.5Nb2.5Ta钛合金的耐腐蚀性及生物相容性[J].机械工程材料,2010,34(10):55～58
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