Effect of Sn addition on the mechanical properties and bio-corrosion behavior of cytocompatible Mg-4Zn based alloys

被引：83

作者：

Jiang, Weiyan ^{[1
]}

Wang, Jingfeng ^{[1
]}

Zhao, Weikang ^{[2
]}

Liu, Qingshan ^{[1
]}

Jiang, Dianming ^{[2
]}

Guo, Shengfeng ^{[3
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China

[2] Chongqing Med Univ, Affiliated Hosp 1, Dept Orthoped, Chongqing 400016, Peoples R China

[3] Southwest Univ, Fac Mat & Energy, Chongqing 400715, Peoples R China

来源：

JOURNAL OF MAGNESIUM AND ALLOYS | 2019年 / 7卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Magnesium alloy; Polarization; Immersion; Bio-corrosion behavior; Cytocompatibility; IN-VIVO CORROSION; MAGNESIUM ALLOY; VITRO DEGRADATION; MG; ZN; MICROSTRUCTURE; MN; CYTOTOXICITY; RESISTANCE; PHASES;

D O I：

10.1016/j.jma.2019.02.002

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The mechanical properties and bio-corrosion behaviors of as-extruded Mg-4Zn alloys after Sn addition were investigated, systematically. A small amount of Sn addition to Mg-4Zn alloy slightly improved the mechanical properties for solid solution strengthening, and significantly controlled the bio-corrosion rates. Sn participating in the outer layer film formation as SnO/SnO2 resisted the bio-corrosion proceeding. Especially, Mg-4Zn-1.5Sn alloy, with a weight loss rate of 0.45 mm/y and hydrogen evolution rate of 0.099 mL/cm(2)/day, showed cytotoxicity grade of 0 to MC3T3-E1 cells. The perfect alliance of cytocompatibility, suitable mechanical properties and low bio-corrosion rate demonstrates that this Mg-4Zn-1.5Sn alloy is a promising biodegradable magnesium alloy for orthopedic implants. (C) 2019 Published by Elsevier B.V. on behalf of Chongqing University.

引用

页码：15 / 26

页数：12

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