国外生物医用钛合金的发展现状

发布时间：2018-06-10 02:06

本文选题：钛合金 + 低模量　；参考：《稀有金属材料与工程》2012年11期

【摘要】：综述了近年来国外在生物医用钛及钛合金方面的研究与开发现状。为了取代普遍使用的Ti-6Al-4V合金,研发了多种无毒无敏感性元素、低弹性模量、高力学性能的新型β型钛合金;采用多孔技术并调节孔隙率,使材料的弹性模量与人体骨骼基本相当,通过将聚合物渗入到多孔钛的方法弥补多孔钛强度的降低,并使材料具有更好的生物相容性;为适应矫形外科领域的需求,开发了多孔TiNi超弹性形状记忆合金,从而克服了骨与植入体之间结合力弱以及弹性模量不匹配的弊端。此外,研发了多种不含毒性和过敏性元素的β型超弹性形状记忆钛合金,可以替代TiNi合金而更安全地应用于医学领域;开发了多种钛的表面改性技术,通过改性层的沉积及表面硬化使植入体的生物相容性和抗磨损性得到提高。
[Abstract]:The research and development of titanium and titanium alloys for biomedical applications abroad in recent years are reviewed. In order to replace the widely used Ti-6Al-4V alloy, a variety of non-toxic and non-sensitive elements, low modulus of elasticity and high mechanical properties have been developed. The elastic modulus of the material is basically equal to that of the human skeleton. The reduction of the strength of porous titanium is compensated by the infiltration of polymer into porous titanium, and the material has better biocompatibility; in order to meet the needs of orthopedic surgery, A porous Tini superelastic shape memory alloy was developed to overcome the weakness of bonding force and the mismatch of elastic modulus between bone and implant. In addition, a variety of 尾 type superelastic shape memory titanium alloys without toxic and allergic elements have been developed, which can be used in the medical field more safely instead of Tini alloys, and various surface modification techniques of titanium have been developed. The biocompatibility and wear resistance of the implant were improved by deposition and surface hardening of the modified layer.
【作者单位】：西部金属材料股份有限公司;西部钛业有限责任公司;
【分类号】：TG146.23;R318.08

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