金属系生体材料当前大多用作人造骨骼、人造骨关节、骨固定材、人造牙根等硬组织代替材料以及人工心肺和人造心脏的起搏器使用。但在人体中长时期使用金属材料时，往往发生各种各样的问题，诸如在人体中长期溶出有害的金属离子时就会引起毒性和过敏性反应。因此，作为生体材料 Metallic biomaterials are mostly used as artificial pacemakers for artificial bones, artificial bone and joint, bone fixation materials, artificial tooth roots and other hard tissues instead of materials as well as artificial cardiopulmonary and artificial heart pacemakers. However, in the long-term use of metal materials in the human body, various problems often occur, such as toxic and anaphylactic reactions caused by long-term dissolution of harmful metal ions in the human body. Therefore, as a biomaterial