Biomedical metal materials have always been a major biomedical material with a large and wide range of clinical use due to their excellent properties such as high strength and toughness, fatigue resistance, easy forming, and corrosion resistance. They are also the preferred implant material for hard tissues (bones and teeth that need to withstand higher loads) and interventional stents. And nano-medical metal materials have better corrosion resistance and biocompatibility. This article focuses on the changes and improvements in the properties of several typical medical metal materials surfaces after nanocrystallization, and discusses the current problems and development prospects of nano-medical metal materials.
医用金属材料具有高强韧性、耐疲劳、易成形和耐腐蚀性等优良性能，既是临床应用最广泛且用量最大的主要生物医用材料，更是需要承受较高载荷的骨、齿等硬组织以及介入治疗支架的首选植入材料。而纳米医用金属材料具有更好的耐蚀性和生物相容性。本文总结了近年临床常用的医用金属材料通过表面纳米化处理带来的性能改变与提升，并对纳米医用金属材料目前存在的问题与发展前景进行讨论。.
Keywords: Biomedical metal materials; biocompatibility; nanocrystallization.