Influence of biocompatible metal ions (Ag, Fe, Y) on the surface   chemistry, corrosion behavior and cytocompatibility of Mg-1Ca alloy   treated with MEVVA

doi:10.1016/j.colsurfb.2015.05.050

CORC > 北京大学 > 工学院

	Influence of biocompatible metal ions (Ag, Fe, Y) on the surface chemistry, corrosion behavior and cytocompatibility of Mg-1Ca alloy treated with MEVVA
	Liu, Yang ; Bian, Dong ; Wu, Yuanhao ; Li, Nan ; Qiu, Kejin ; Zheng, Yufeng ; Han, Yong
刊名	COLLOIDS AND SURFACES B-BIOINTERFACES
	2015
关键词	Mg-Ca alloy Plasma ion implantation Corrosion property Mechanism Biocompatibility BIODEGRADABLE MAGNESIUM ALLOYS SIMULATED BODY-FLUID IN-VITRO ELECTROCHEMICAL-BEHAVIOR AZ31 ALLOY MG-SR IMPLANTATION RESISTANCE BONE DEGRADATION
DOI	10.1016/j.colsurfb.2015.05.050
英文摘要	Mg-1Ca samples were implanted with biocompatible alloy ions Ag, Fe and Y respectively with a dose of 2 x 10(17) ions cm(-2) by metal vapor vacuum arc technique (MEVVA). The surface morphologies and surface chemistry were investigated by SEM, AES and XPS. Surface changes were observed after all three kinds of elemental ion implantation. The results revealed that the modified layer was composed of two sublayers, including an outer oxidized layer with mixture of oxides and an inner implanted layer, after Ag and Fe ion implantation. Y ion implantation induced an Mg/Ca-deficient outer oxidized layer and the distribution of Y along with depth was more homogeneous. Both electrochemical test and immersion test revealed accelerated corrosion rate of Ag-implanted Mg-1Ca and Fe-implanted Mg-1Ca, whereas Y ion implantation showed a short period of protection since enhanced corrosion resistance was obtained by electrochemical test, but accelerated corrosion rate was found by long period immersion test. Indirect cytotoxicity assay indicated good cytocompatibility of Y-implanted Mg-1Ca. Moreover, the corresponding corrosion mechanisms involving implanting ions into magnesium alloys were proposed, which might provide guidance for further application of plasma ion implantation to biodegradable Mg alloys. (C) 2015 Elsevier B.V. All rights reserved.; National Basic Research Program of China (973 Program) [2012CB619102]; National Science Fund for Distinguished Young Scholars [51225101]; National Natural Science Foundation of China [51431002, 31170909]; NSFC/RGC Joint Research Scheme [51361165101]; State Key Laboratory for Mechanical Behavior of Materials [20141615]; Beijing Municipal Science and Technology Project [Z131100005213002]; Project for Supervisor of Excellent Doctoral Dissertation of Beijing [20121000101]; SCI(E); EI; PubMed; ARTICLE; yfzheng@pku.edu.cn; 99-107; 133
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/416921]
专题	工学院
推荐引用方式 GB/T 7714	Liu, Yang,Bian, Dong,Wu, Yuanhao,et al. Influence of biocompatible metal ions (Ag, Fe, Y) on the surface chemistry, corrosion behavior and cytocompatibility of Mg-1Ca alloy treated with MEVVA[J]. COLLOIDS AND SURFACES B-BIOINTERFACES,2015.
APA	Liu, Yang.,Bian, Dong.,Wu, Yuanhao.,Li, Nan.,Qiu, Kejin.,...&Han, Yong.(2015).Influence of biocompatible metal ions (Ag, Fe, Y) on the surface chemistry, corrosion behavior and cytocompatibility of Mg-1Ca alloy treated with MEVVA.COLLOIDS AND SURFACES B-BIOINTERFACES.
MLA	Liu, Yang,et al."Influence of biocompatible metal ions (Ag, Fe, Y) on the surface chemistry, corrosion behavior and cytocompatibility of Mg-1Ca alloy treated with MEVVA".COLLOIDS AND SURFACES B-BIOINTERFACES (2015).