可降解医用镁合金耐腐蚀性能研究进展

Research progress of corrosion resistance of degradable medical magnesium alloys

摘要:

镁及其合金相比于其他不可降解的医用金属材料具有更好的可生物降解性，且无需进一步手术取出，降低了治疗成本，已成为人体植入物的候选材料。本文针对可降解吸收的医用镁合金的耐腐蚀性较差，在临床上的应用受到了很大的限制的问题，介绍了三种典型医用镁合金耐腐蚀性能的变化和近几年有关可降解医用镁合金的腐蚀研究进展，总结了研究可降解医用镁合金耐腐蚀性能的实验方法和结果。得出未来医用镁合金既要充分发挥其可降解吸收的优点，又要把控好在人体服役期间的降解速度的结论。

关键词:医用镁合金;耐腐蚀性;可降解性

Abstract:

Compared with other non-degradable medical metal materials, magnesium and its alloys have better biodegradability, and no further surgical removal is required, which reduces the cost of treatment and has become a candidate material for human implants. This article addresses the problem of poor corrosion resistance of medical magnesium alloys that are degradable and absorbed, and their clinical application is greatly limited. The changes in the corrosion resistance of three typical medical magnesium alloys and the related degradation in recent years are introduced. The progress of the research on the corrosion of medical magnesium alloys summarizes the experimental methods and results of studying the corrosion resistance of degradable medical magnesium alloys. It is concluded that medical magnesium alloys in the future must give full play to their advantages of degradable absorption, but also must control the degradation rate during human service.

Key words:Medical magnesium alloy; corrosion resistance; degradability