生物医用镁合金研究进展

Research progress in biomedical magnesium alloys

由于具有优异的力学相容性、生物相容性和可降解性,镁及其合金成为新一代生物医用可降解金属植入材料的研究焦点。但镁及其合金由于较快的降解速率,严重制约了其在临床上的应用步伐。开发高强度、高韧性、高耐蚀,且降解行为可控的高性能镁合金迫在眉睫。综述了生物医用可降解镁合金的最新研究进展,详细介绍了镁及其合金作为生物医用材料的优势与不足、产品研发现状、降解机理及腐蚀行为和耐蚀性研究,并指出了研究中存在的问题和未来发展方向。

Due to the excellent mechanical compatibility, biocompatibility and biodegradability, magnesium and its alloys are becoming the research focus of a new generation of biomedical degradable metallic implant materi- als. However, the rapid degradation rate of magnesium and its alloys puts serious obstacles in the way of their clinical applications. It is highly urgent to develop magnesium alloys with high strength, high toughness, high corrosion resistance, and controllable degradation behavior. The latest research progress in degradable biomed- ical magnesium alloys was reviewed. The advantages and disadvantages, current products, degradation mecha nism and corrosion behavior, and corrosion resistance research were presented in detail for magnesium and its alloys as biomedical materials. The problems in the research and {uture development directions were also point ed out.