表面处理工艺对NiTi合金表面质量及表面性能分析  

Analysis of surface quality and surface properties of NiTi alloy by surface treatment process

作　　者：陈明阳 苏娟[1] 苏应龙 郭昊天 冯海全 CHEN Mingyang;SU Juan;SU Yinglong;GUO Haotian;FENG Haiquan(School of Materials Science and Engineering,Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学材料科学与工程学院,内蒙古呼和浩特010051

出　　处：《内蒙古工业大学学报(自然科学版)》2025年第2期97-101,共5页Journal of Inner Mongolia University of Technology:Natural Science Edition

基　　金：内蒙古自治区自然科学基金项目(2021LHMS05001);内蒙古工业大学大学生校级创新训练计划项目(SA2100001137);内蒙古工业大学2021博士启动金研究项目(DC2100000899)。

摘　　要：采用机械打磨、电化学抛光、化学腐蚀(酸洗)三种表面处理方式对热处理后的NiTi合金进行表面处理,通过对经过表面处理的试样进行表面形貌及成分分析、腐蚀性能测试、生物相容性测试来探究不同处理工艺对合金表面的影响作用。结果表明,与经过机械打磨和酸洗处理的NiTi合金相比,经过电化学抛光的NiTi合金表面光滑均匀,粗糙度最低,且表面Ni元素含量大幅降低。另外,电化学抛光后的NiTi合金耐蚀性最好,机械打磨试样的耐蚀性最差。电化学抛光NiTi合金相较于机械打磨和酸洗处理的NiTi合金在Hank's液中Ni离子析出量最低。Mechanical,electrochemical,and chemical polishing(pickling)were used to treat the surface of the NiTi alloy after heat treatment.The surface morphology and composition analysis,corrosion performance test,and biocompatibility test were conducted to explore the effects of different treatment processes on the surface of NiTi alloy.The results show that compared with the mechanical and pickling NiTi alloy,the surface of electrochemical polished NiTi alloy is smoother and more uniform and the content of Ni on the surface is greatly reduced.Meanwhile,the electrochemical polished NiTi has the best corrosion resistance while the mechanically polished samples has the worst.Compared with mechanical polishing and pickling,the electrochemical polished NiTi alloy has the least precipitation of Ni ions in Hank's solution.

关 键 词：NITI合金 电化学抛光 酸洗 耐腐蚀性 

分 类 号：TK31[动力工程及工程热物理—热能工程]