Effects of Zr on Microstructure and Biodegradation Behavior of Medical Zn-Mg Alloy

Liu Xurui; Huang Hao; Zhan Wei; Zhang Lei

doi:10.15980/j.tzzz.2019.10.003

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Effects of Zr on Microstructure and Biodegradation Behavior of Medical Zn-Mg Alloy
Vol. 39, Issue 10, Pages: 1054-1057(2019)
Published： 2019 ，
DOI： 10.15980/j.tzzz.2019.10.003

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[1]刘栩瑞,黄浩,占维,张磊.Zr对医用Zn-Mg合金凝固组织和生物降解行为的影响[J].特种铸造及有色合金,2019,39(10):1054-1057.

Liu Xurui, Huang Hao, Zhan Wei, et al. Effects of Zr on Microstructure and Biodegradation Behavior of Medical Zn-Mg Alloy. [J]. Special Casting & Nonferrous Alloys 39(10):1054-1057(2019)
[1]刘栩瑞,黄浩,占维,张磊.Zr对医用Zn-Mg合金凝固组织和生物降解行为的影响[J].特种铸造及有色合金,2019,39(10):1054-1057. DOI： 10.15980/j.tzzz.2019.10.003.

Liu Xurui, Huang Hao, Zhan Wei, et al. Effects of Zr on Microstructure and Biodegradation Behavior of Medical Zn-Mg Alloy. [J]. Special Casting & Nonferrous Alloys 39(10):1054-1057(2019) DOI： 10.15980/j.tzzz.2019.10.003.

摘要

向生物医用Zn-0.8Mg合金中添加Zr

研究了Zr含量对合金凝固组织和生物降解行为的影响。结果表明

在Zn-0.8Mg合金中添加Zr

合金中除了生成初生η-Zn相和Mg

相外

还析出了Zn

Zr相。随着Zr含量增加

合金中的初生η-Zn相明显粗化

其平均晶粒尺寸由102μm逐渐增大到326μm。同时

Zr相的体积分数也随之逐渐增加

且合金在Hank’s溶液中的质量损失腐蚀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 Zr on microstructure and biodegradation behavior of medical Zn-0.8 Mg alloy were investigated.The results show that the Zn-0.8 Mg alloy consists of primaryη-Zn phase and Mg

phase

in addition

Zr phase can be observed with Zr addition.With the increase of Zr contents

the primaryη-Zn phase is coarsened gradually

and the average grain size is increased gradually from 102μm to 326μm

meanwhile

the volume fraction of Zn

Zr phase is increased gradually also.The corrosion rate and self-corrosion current density of the alloys are gradually increased with the increase of Zr contents

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