Effects of Cu on Microstructure and Biodegradation Behavior of Zn-Mg Alloy

Zhang Shuaijie; Huang Hao; Zhan Wei; Zhang Lei

doi:10.15980/j.tzzz.2020.05.026

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Effects of Cu on Microstructure and Biodegradation Behavior of Zn-Mg Alloy
Vol. 40, Issue 5, Pages: 573-576(2020)
Published： 2020 ，
DOI： 10.15980/j.tzzz.2020.05.026

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[1]张帅杰,黄浩,占维,张磊.微量Cu对生物Zn-Mg合金组织和生物降解行为的影响[J].特种铸造及有色合金,2020,40(05):573-576.

Zhang Shuaijie, Huang Hao, Zhan Wei, et al. Effects of Cu on Microstructure and Biodegradation Behavior of Zn-Mg Alloy. [J]. Special Casting & Nonferrous Alloys 40(5):573-576(2020)
[1]张帅杰,黄浩,占维,张磊.微量Cu对生物Zn-Mg合金组织和生物降解行为的影响[J].特种铸造及有色合金,2020,40(05):573-576. DOI： 10.15980/j.tzzz.2020.05.026.

Zhang Shuaijie, Huang Hao, Zhan Wei, et al. Effects of Cu on Microstructure and Biodegradation Behavior of Zn-Mg Alloy. [J]. Special Casting & Nonferrous Alloys 40(5):573-576(2020) DOI： 10.15980/j.tzzz.2020.05.026.

摘要

通过向生物医用Zn-0.8Mg合金中添加微量合金元素Cu

研究了Cu含量对合金组织和生物降解行为的影响。结果表明

随着Cu含量增加

合金中初生η-Zn相逐渐细化

其平均晶粒尺寸由106μm减小到43μm

同时

第二相的体积分数也随之逐渐增加。腐蚀浸泡和电化学测试结果均表明

随着Cu含量增加

合金在Hank’s溶液中的失重降解速率和自腐蚀电流密度均逐渐增大

表明合金的降解速率逐渐提高。

Abstract

Effects of Cu on microstructure and biodegradation behavior of Zn-0.8 Mg alloy were investigated. The results show that the primary η-Zn phase in the alloys is further refined with the increase of Cu contents

and the average grain size is gradually increased from 106 μm to 43 μm. Moreover

the volume fraction of second phase is gradually increased with the increase of Cu contents. The results reveal that corrosion rate and self-corrosion current density of the alloys are gradually increased with the increase of Cu contents

indicating that the degradation rate of the alloys in Hank’s solution is gradually increased.