Xu Liming, Liu Xingwang, Sun Kang, Fu Rao, Wang Gang
Institute of Materials, Shanghai University, Shanghai 200444, China.
Sports Medicine Department of Huashan Hospital, Fudan University, Shanghai 200040, China.
Materials (Basel). 2022 Apr 1;15(7):2613. doi: 10.3390/ma15072613.
Magnesium alloys exhibit superior biocompatibility and biodegradability, which makes them an excellent candidate for artificial implants. However, these materials also suffer from lower corrosion resistance, which limits their clinical applicability. The corrosion mechanism of Mg alloys is complicated since the spontaneous occurrence is determined by means of loss of aspects, e.g., the basic feature of materials and various corrosive environments. As such, this study provides a review of the general degradation/precipitation process multifactorial corrosion behavior and proposes a reasonable method for modeling and preventing corrosion in metals. In addition, the composition design, the structural treatment, and the surface processing technique are involved as potential methods to control the degradation rate and improve the biological properties of Mg alloys. This systematic representation of corrosive mechanisms and the comprehensive discussion of various technologies for applications could lead to improved designs for Mg-based biomedical devices in the future.
镁合金具有卓越的生物相容性和生物降解性，这使其成为人工植入物的理想选择。然而，这些材料的耐腐蚀性较低，这限制了它们的临床应用。镁合金的腐蚀机制很复杂，因为其自发腐蚀情况取决于多种因素，例如材料的基本特性和各种腐蚀环境。因此，本研究综述了一般的降解/沉淀过程、多因素腐蚀行为，并提出了一种合理的金属腐蚀建模和预防方法。此外，还涉及成分设计、结构处理和表面处理技术，作为控制镁合金降解速率和改善其生物学性能的潜在方法。这种对腐蚀机制的系统阐述以及对各种应用技术的全面讨论，有望在未来改进镁基金属生物医学设备的设计。
