Microstructure, mechanical properties and bio-corrosion properties of Mg-Zn-Mn-Ca alloy for biomedical application

CORC > 金属研究所 > 中国科学院金属研究所

	Microstructure, mechanical properties and bio-corrosion properties of Mg-Zn-Mn-Ca alloy for biomedical application
	E. L. Zhang ; L. Yang
刊名	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
	2008
卷号	497 期号:1-2 页码:111-118
关键词	Magnesium alloy Calcium Microstructure Mechanical properties Corrosion properties in-vivo corrosion wt.percent zn tensile properties magnesium alloys az91d alloy behavior bone temperature refinement additions
ISSN号	0921-5093
中文摘要	Microstructure, mechanical properties and bio-corrosion properties of as-cast Mg-Zn-Mn-Ca alloys were investigated for biomedical application in detail by optical microscopy, scanning electronic microscopy (SEM), mechanical properties testing and electrochemical measurement. SEM and optical microscopy observation indicated that the grain size of the as-cast alloys significantly decreased with the increasing of Ca content up to 0.5 wt%. Further increasing of Ca content did not refine the grain more. The phase constitute was mainly controlled by the atomic ratio of Zn to Ca. When the ratio was more than 1.0-1.2, the alloy was mainly composed of primary Mg and lamellar eutectic (alpha-Mg+Ca(2)Mg(6)Zn(3)), while the alloy was composed of primary Mg and divorced eutectic (alpha-Mg+ Mg(2)Ca +Ca(2)Mg(6)Zn(3)) when the atomic ratio was less than 1.0-1.2. The yield strength of the as-cast alloy increased but the elongation and the tensile strength increased first and then decreased with the increasing of Ca content. It was thought that Mg2Ca phase deteriorated the tensile strength and ductility. Electrochemical measurements indicated that Mg(2)Ca phase improved the corrosion resistance of the as-cast alloy. (C) 2008 Elsevier B.V. All rights reserved.
原文出处	://WOS:000262033300016
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/33309]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	E. L. Zhang,L. Yang. Microstructure, mechanical properties and bio-corrosion properties of Mg-Zn-Mn-Ca alloy for biomedical application[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2008,497(1-2):111-118.
APA	E. L. Zhang,&L. Yang.(2008).Microstructure, mechanical properties and bio-corrosion properties of Mg-Zn-Mn-Ca alloy for biomedical application.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,497(1-2),111-118.
MLA	E. L. Zhang,et al."Microstructure, mechanical properties and bio-corrosion properties of Mg-Zn-Mn-Ca alloy for biomedical application".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 497.1-2(2008):111-118.