摘要
镍钛合金基于特有的超弹性、形状记忆性以及良好的物理机械性与生物相容性,广泛应用于介入医疗领域。同时,由于人体生理环境复杂,镍钛合金不可避免地存在镍离子释放和细菌黏附等问题,通过表面改性技术提升镍钛合金耐蚀性及生物相容性成为了镍钛合金的研究热点。简要介绍了镍钛合金的性能特征以及电火花表面改性、激光诱导、阳极氧化、自组装合成及化学改性等表面处理方法的最新研究进展。总结出微纳结构、元素类型等对镍钛合金表面润湿性、耐蚀性以及生物相容性的影响规律。指出采用多种表面改性技术复合的方法提升植入体性能是未来镍钛合金表面改性的主要方向。
NiTi alloys are widely used in the field of interventional medicine because of their unique hyperelasticity,shape memory,good physical and mechanical properties,biocompatibility.At the same time,due to the complex human physiological environment,NiTi alloy inevitably have problems such as Ni ion release and bacterial adhesion.Improving the corrosion resistance and biocompatibility of NiTi alloy through surface modification technology has become a research hotspot.This paper briefly introduces the properties of NiTi alloy and the latest progress of surface treatment methods such as electric discharge machining surface modification,laser induction,anodic oxidation,self-assembly synthesis and chemical surface modification.The effects of micro/nano structure and element types on the wettability,corrosion resistance and biocompatibility of NiTi alloy are summarized.It is pointed out that the main direction of surface modification of NiTi alloy in the future is to adopt multiple surface modification technologies to improve the implant performance.
作者
倪家伟
曹自洋
许威
潘杰
NI Jiawei;CAO Ziyang;XU Wei;PAN Jie(School of Mechanical Engineering,Suzhou University of Science and Technology,Suzhou 215009,China;Suzhou Key Laboratory of Precision and Efficient Machining Technology,Suzhou University of Science and Technology,Suzhou 215009,China)
出处
《中国材料进展》
CAS
CSCD
北大核心
2024年第6期525-532,共8页
Materials China
基金
国家自然科学基金项目(51905363)
江苏省中外合作办学平台联合科研项目(2019-21)。
关键词
镍钛合金
表面改性
耐蚀性
生物相容性
复合改性
NiTi alloy
surface modification
corrosion resistance
biocompatibility
composite modification
