Effect of surface mechanical attrition treatment on biodegradable Mg-1Ca   alloy

doi:10.1016/j.msec.2013.11.010

CORC > 北京大学 > 工学院

	Effect of surface mechanical attrition treatment on biodegradable Mg-1Ca alloy
	Li, N. ; Li, Y. D. ; Li, Y. X. ; Wu, Y. H. ; Zheng, Y. F. ; Han, Y.
刊名	materials science engineering c materials for biological applications
	2014
关键词	Biomedical Mg alloys Mg-Ca SMAT Grain refinement Corrosion resistance AZ91D MAGNESIUM ALLOY INDUCED GRAIN-REFINEMENT CORROSION BEHAVIOR PURE MAGNESIUM CALCIUM ALLOY BIO-CORROSION MG ALLOY BONE LAYER DEGRADATION
DOI	10.1016/j.msec.2013.11.010
英文摘要	Surface mechanical attrition treatment (SMAT) is considered to be an effective approach to obtain a nanostructured layer in the treated surface of metals. In this study, we evaluated the effect of SMAT on the microstructure, mechanical properties and corrosion properties of biodegradable Mg-1Ca alloy, with pure Mg as control. Grain refinement layers with grain size at the nanometer scale in the topmost surface were successfully prepared on Mg-1Ca alloy using SMAT technique, similar to pure Mg. The SMAT not only refined the surface layer of Mg-1Ca alloy, but also promoted the re-dissolution of the Mg2Ca phase into the matrix. As a result, the microhardness of the SMATed samples in the near-surface region was considerably enhanced, and the surface roughness and wettability of the SMATed samples were increased. However, the SMAT led to high density of crystalline defects such as grain boundaries (subgrain boundaries) and dislocations, which severely weakened the corrosion resistance of Mg-1Ca alloy, same as pure Mg. (C) 2013 Elsevier B.V. All rights reserved.; Materials Science, Biomaterials; SCI(E); EI; PubMed; 2; ARTICLE; yfzheng@pku.edu.cn; yonghan@mail.xjtu.edu.cn; 1; 314-321; 35
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/153853]
专题	工学院
推荐引用方式 GB/T 7714	Li, N.,Li, Y. D.,Li, Y. X.,et al. Effect of surface mechanical attrition treatment on biodegradable Mg-1Ca alloy[J]. materials science engineering c materials for biological applications,2014.
APA	Li, N.,Li, Y. D.,Li, Y. X.,Wu, Y. H.,Zheng, Y. F.,&Han, Y..(2014).Effect of surface mechanical attrition treatment on biodegradable Mg-1Ca alloy.materials science engineering c materials for biological applications.
MLA	Li, N.,et al."Effect of surface mechanical attrition treatment on biodegradable Mg-1Ca alloy".materials science engineering c materials for biological applications (2014).