Microstructure, Mechanical Properties and In Vitro Degradation Behavior of a Novel Biodegradable Mg-1.5Zn-0.6Zr-0.2Sc Alloy

被引：39

作者：

Li, Tao ^{[1
]}

Zhang, Hailong ^{[1
]}

He, Yong ^{[1
]}

Wen, Ning ^{[2
]}

Wang, Xitao ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[2] Gen Hosp Chinese Peoples Liberat Army, Inst Stomatol, Beijing 100853, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2015年 / 31卷 / 07期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

Magnesium alloys; Scandium; Biomaterials; Biodegradable; Corrosion; ZN-ZR ALLOY; CORROSION BEHAVIOR; MAGNESIUM ALLOYS; CONVERSION COATINGS; BIOCOMPATIBILITY; ND; RESISTANCE;

D O I：

10.1016/j.jmst.2015.02.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel Mg-1.5Zn-0.6Zr-0.2Sc (denoted as ZK21-0.2Sc) alloy was developed as potential biodegradable implant materials. The microstructure, mechanical properties, and in vitro degradation behavior of the as-cast ZK21-0.2Sc alloy were investigated and compared with ZK21 alloy and pure Mg. The ZK21 -0.2Sc alloy showed a single-phase structure with fine equiaxed grains. The alloy exhibited a good balance between strength and ductility. Both immersion tests and electrochemical tests showed that the ZK21-0.2Sc alloy had the lowest degradation rate in Hank's solution. The excellent degradation behavior of ZK21-0.2Sc alloy could be explained by the single-phase and fine grain structure, the more effective protection corrosion film, and the beneficial alloying effects of Zn, Zr and Sc. Copyright (C) 2015, The editorial office of Journal of Materials Science & Technology. Published by Elsevier Limited. All rights reserved.

引用

页码：744 / 750

页数：7

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