Effects of Y on the Microstructure, Mechanical and Bio-corrosion Properties of Mg-Zn-Ca Bulk Metallic Glass

被引：35
作者：
Wang, Jingfeng [1 ]
Li, Yang [1 ]
Huang, Song [1 ]
Wei, Yiyun [2 ]
Xi, Xingfeng [3 ]
Cai, Kaiyong [3 ]
Pan, Fusheng [1 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China
[2] China Acad Engn Phys, Mianyang 621900, Peoples R China
[3] Chongqing Univ, Coll Bioengn, Chongqing 400044, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2014年 / 30卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Mg alloy; Microstructure; Mechanical properties; Bio-corrosion resistance; Bio-compatibility; IN-VITRO DEGRADATION; SIMULATED BODY-FLUID; MATRIX COMPOSITES; AMORPHOUS-ALLOYS; MAGNESIUM ALLOYS; FORMING ABILITY; VIVO; BIOCOMPATIBILITY; BEHAVIOR; BONE;
D O I：
10.1016/j.jmst.2014.11.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The micro-alloying effects of Y on the microstructure, mechanical properties, and bio-corrosion behavior of Mg(69-x)ZN(27)Ca(4)Y(x) (x = 0, 1, 2 at.%) alloys were investigated through X-ray diffraction, compressive tests, electrochemical treatments, and immersion tests. The Mg69Zn27Ca4 alloy was found to be absolutely amorphous, and its glass-forming ability decreased with the addition of Y. The Mg68Zn27Ca4Y1 alloy exhibited an ultrahigh compressive strength above 1010 MPa as well as high capacity for plastic strain above 3.1%. Electrochemical and immersion tests revealed that these Y-doped Mg-Zn-Ca alloys had good bio-corrosion resistance in simulated body fluid (SBF) at 37 degrees C. The results of the cytotoxicity test showed high cell viabilities for these alloys, which means good bio-compatibility.
引用
收藏
页码：1255 / 1261
页数：7
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