Abstract

In this study, the effect of Mn addition on the corrosion properties and biocompatibility of a new biodegradable Mg–1Ca–2Zn–1RE–xMn alloy (x = 0, 0.3, 0.6, 0.9 wt%) was investigated using Hank’s solution. The main purpose was to achieve a biocompatible alloy with optimum corrosion properties which can be used to fabricate biodegradable implants. Thus a special composition of alloying elements was used. X-ray diffraction analysis revealed that Mn addition does not induce any Mn intermetallic phase. Besides, Mn shifted the solute elements from the grain boundaries toward the matrix. The corrosion resistance of the alloys was efficiently improved by adding Mn, according to the electrochemical measurements. The highest corrosion resistance in comparison with other alloys was observed for the alloy with 0.9 wt% Mn. Moreover, the Fourier-transform infrared spectroscopy test and scanning electron microscope images of the immersed specimens in Hank’s solution, indicate that Mg–1Ca–2Zn–1RE–xMn is a biocompatible alloy as phosphate and carbonate groups are formed on the specimens which are the fingerprint of hydroxyapatite formation.

Graphic Abstract

中文翻译：

---

锰添加量对新型可生物降解的Mg-1Ca-2Zn-1RE合金腐蚀和生物相容性的影响

摘要

在这项研究中，使用汉克溶液研究了添加锰对新型可生物降解的Mg-1Ca-2Zn-1RE-xMn合金（x = 0、0.3、0.6、0.9 wt％）的腐蚀性能和生物相容性的影响。主要目的是获得一种具有最佳腐蚀性能的生物相容性合金，该合金可用于制造可生物降解的植入物。因此，使用了特殊的合金元素成分。X射线衍射分析表明，Mn的添加不会引起任何Mn金属间相。另外，Mn使溶质元素从晶界向基体移动。根据电化学测量，通过添加Mn有效地提高了合金的耐腐蚀性。Mn含量为0.9 wt％的合金与其他合金相比，具有最高的耐腐蚀性。此外，

图形摘要