NiTi合金基TiN薄膜的血液相容性和耐腐蚀性研究  

Studies on Blood Compatibility and Corrosion Resistance of TiN Films on NiTi Alloys

作　　者：李波[1] 李小侠[1] 王天民[2] 程峰[1] 

机构地区：[1]兰州大学 [2]北京航空航天大学,北京100083

出　　处：《稀有金属材料与工程》2007年第5期857-861,共5页Rare Metal Materials and Engineering

基　　金：教育部留学归国人员科研启动基金;中国科学院兰州化学物理研究所固体润滑国家重点实验室基金资助

摘　　要：采用电弧离子镀法在NiTi形状记忆合金表面制备了TiN薄膜,利用X射线衍射、扫描电子显微镜和原子力显微镜研究了TiN薄膜的相组成及表面特性;在生物体外,研究比较了镀膜和未镀膜的NiTi合金的血液相容性和耐腐蚀性。结果表明:TiN薄膜提高了NiTi合金的血液相容性,并使Ni离子的释放率约降低了1个数量级,有效地提高了NiTi合金的耐腐蚀性。薄膜越厚性能提高的效果越显著。TiN films were deposited onto the NiTi shape memory alloys by an arc ion plating technique. The phase identification and surface characteristics of the specimens were successively performed and tested by X-ray diffraction, scanning electron microscope and atom force microscopy. We investigated and compared compatibility and corrosion properties of NiTi alloys in vitro blood with and without TiN film. Experimental results indicated that the TiN film had improved the blood compatibility and corrosion resistance properties of NiTi alloy, and the release rate of Ni ions was reduced about one magnitude after plated TiN film; the thicker the film was, the more the properties improved.

关 键 词：NITI形状记忆合金 TIN薄膜 血液相容性 耐腐蚀性 

分 类 号：TG174.444[金属学及工艺—金属表面处理] O484.4[金属学及工艺—金属学]