Improving in-vitro biocorrosion resistance of Mg-Zn-Mn-Ca alloy in Hank＇s solution through addition of cerium

Two kinds of Mg-Zn-Mn-Ca alloys with and without cerium were designed and fabricated. In-vitro degradation tests and electrochemical evaluations were carried out to compare their biocorrosion behavior in Hank＇s solution at 37 oC. After adding cerium, the continuous network distributed Ca2Mg6Zn3 phas...

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Bibliographic Details
Published in:中国稀土学报：英文版 2015, Vol.33 (1), p.93-101
Main Author: 张凡 马爱斌 宋丹 江静华 卢富敏 张留艳 杨东辉 陈建清
Format: Article
Language:English
Subjects:
体外
溶液
生物腐蚀
电阻
钙合金
铈
锌
镁
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Summary:Two kinds of Mg-Zn-Mn-Ca alloys with and without cerium were designed and fabricated. In-vitro degradation tests and electrochemical evaluations were carried out to compare their biocorrosion behavior in Hank＇s solution at 37 oC. After adding cerium, the continuous network distributed Ca2Mg6Zn3 phases in Mg-2Zn-0.5Mn-1Ca alloy（Alloy I） were separated due to the emerging non-continuously distributed Mg2 Ca phase and Mg12 Ce Zn phase. This change led to corrosion acceleration of Mg matrix at the initial stage but also sped up the formation of compact corrosion products for Mg-2Zn-0.5Mn-1Ca-1.5Ce alloy（Alloy II）, and therefore enhanced its biocorrosion resistance. Cerium containing Alloy II has the potential to be used as future biomaterials.
ISSN:1002-0721
2509-4963