Surface modification of die casting Al alloy ADC12 with high Si content by micro-arc oxidization

IMR OpenIR

	Surface modification of die casting Al alloy ADC12 with high Si content by micro-arc oxidization
	Zhang, YJ ; Li, WF ; Wang, FH
	2005-12-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	41 期号:12 页码:1289-1292
摘要	Ceramic coating on the surface of die casting Al alloy ADC12 with high Si content has been prepared by micro-arc oxidization (MAO) in an electrolyte containing Na(2)SiO(3) and Na(3)PO(4) as its major compositions at constant current density. The testing results of hardness and corrosion protection indicate that the obtained ceramic coating has relatively high microhardness (HV up to 1430) and could provide effective protection to substrate. Eddy currency thickness measurement and SEM micrographs manifest that the ceramic coating consists of a double-layer structure and its thickness is relatively even. EDX and XRD analyses reveal that the main elements in the coating are O, Al, Si as well as P, and that the main phases are gamma-Al(2)O(3), alpha-Al(2)O(3). In addition small amounts of chi-Al(2)O(3), theta-Al(2)O(3) and Al(2)SiO(5) are also detected.
关键词	die casting Al alloy ADC12 micro-arc oxidization ceramic coating surface modification high Si content
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000234521500011
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/85272
专题	中国科学院金属研究所
作者单位	1.S China Univ Technol, Coll Mech Engn, Inst Mat Sci & Technol, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, YJ,Li, WF,Wang, FH. Surface modification of die casting Al alloy ADC12 with high Si content by micro-arc oxidization[J]. ACTA METALLURGICA SINICA,2005,41(12):1289-1292.
APA	Zhang, YJ,Li, WF,&Wang, FH.(2005).Surface modification of die casting Al alloy ADC12 with high Si content by micro-arc oxidization.ACTA METALLURGICA SINICA,41(12),1289-1292.
MLA	Zhang, YJ,et al."Surface modification of die casting Al alloy ADC12 with high Si content by micro-arc oxidization".ACTA METALLURGICA SINICA 41.12(2005):1289-1292.