生物医用植入钛及钛合金的力学性能研究及进展

Study on Mechanical Properties of Titanium and Titanium Alloy for Medical Implants and Its Progress

生物医用植入纯钛具有低密度、优越的耐蚀性、无致敏性和良好的生物相容性,而医用植入钛合金还具有高比强度、较低的弹性模量及易加工等优良特点。所以生物医用植入钛及钛合金已成为外科植入件优选的替代材料。本文重点介绍了人体硬组织修复与替换材料新型钛合金的生物相容性、力学性能、合金添加元素对力学性能的影响和最新研究进展,并指出了未来研究的发展方向。

Pure titanium for medical implants has excellent corrosion resistance, no allergic problems and good biocompatibility. Titanium alloys for medical implants even have excellent specific strength, lower elastic modulus and good machinability as well. Therefore pure titanium and titanium alloys are the optimum replacement materials for the surgical implants. The biocompatibility, mechanical properties, effect of adding alloy elements on mechanical properties for repair of the body hard tissue are summarized, together with the further research and development trend of new titanium alloys.