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

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	Surface modification of die casting Al alloy ADC12 with high Si content by micro-arc oxidization
	Zhang, YJ ; Li, WF ; Wang, FH
刊名	ACTA METALLURGICA SINICA
	2005-12-01
卷号	41 期号:12 页码:1289-1292
关键词	die casting Al alloy ADC12 micro-arc oxidization ceramic coating surface modification high Si content
ISSN号	0412-1961
英文摘要	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.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000234521500011
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/85271]
专题	金属研究所_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.