MICROSTRUCTURE, CORROSION AND WEAR RESISTANCES OF MICROARC OXIDATION COATING ON Al ALLOY 7075

doi:10.3724/SP.J.1037.2011.00010

IMR OpenIR

	MICROSTRUCTURE, CORROSION AND WEAR RESISTANCES OF MICROARC OXIDATION COATING ON Al ALLOY 7075
	Wang Yanqiu 1; Wang Yue 2; Chen Paiming 2; Shao Yawei 1; Wang Fuhui 1,3
通讯作者	Wang Yanqiu(qiuorwang@hrbeu.edu.cn)
	2011-04-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	47 期号:4 页码:455-461
摘要	Microarc oxidation (MAO), an important surface treatment technology for Al alloys in stead of hard anodization, was applied to prepare coating on Al alloy 7075, of which the microstructure and properties of the anti corrosion and anti wear were studied by XRD, SEM, neutral salt spray (NSS) test and ball on disc friction and wear test. The results show that the MAO coating formed on Al alloy 7075 mainly consists of gamma-Al(2)O(3), alpha-Al(2)O(3) and some amorphous SiO(2). Si element results from electrolyte or from substrate. MAO coating exhibits excellent corrosion resistance, for example, coatings with thickness of 70 mu m can endure more than 2000 h in NSS test even without seal treatment. Dense microstructure of MAO coating results in the excellent corrosion resistance. Post seal treatment can greatly enhance the corrosion resistance of the MAO coating, even for thin coating. MAO coating fabricated on Al alloy 7075 possesses similar friction coefficient but much higher wear resistance compared with hard anodized film, for example, the former is as 50 times as the wear resistance of the later. The MAO coating is just slightly worn and its frication coefficient remains unchanged throughout the test.
关键词	Al alloy microarc oxidation coating corrosion resistance wear resistance
资助者	Fundamental Research Funds for the Central Universities
DOI	10.3724/SP.J.1037.2011.00010
收录类别	SCI
语种	英语
资助项目	Fundamental Research Funds for the Central Universities[HEUCFR1021]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000290353700012
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/105274
专题	中国科学院金属研究所
通讯作者	Wang Yanqiu
作者单位	1.Harbin Engn Univ, Corros & Protect Lab, Coll Mat Sci & Chem Engn, Harbin 150001, Peoples R China 2.Luoyang Ship Mat Res Inst, Luoyang 471039, Peoples R China 3.Chinese Acad Sci, State Key Lab Corros & Protect, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang Yanqiu,Wang Yue,Chen Paiming,et al. MICROSTRUCTURE, CORROSION AND WEAR RESISTANCES OF MICROARC OXIDATION COATING ON Al ALLOY 7075[J]. ACTA METALLURGICA SINICA,2011,47(4):455-461.
APA	Wang Yanqiu,Wang Yue,Chen Paiming,Shao Yawei,&Wang Fuhui.(2011).MICROSTRUCTURE, CORROSION AND WEAR RESISTANCES OF MICROARC OXIDATION COATING ON Al ALLOY 7075.ACTA METALLURGICA SINICA,47(4),455-461.
MLA	Wang Yanqiu,et al."MICROSTRUCTURE, CORROSION AND WEAR RESISTANCES OF MICROARC OXIDATION COATING ON Al ALLOY 7075".ACTA METALLURGICA SINICA 47.4(2011):455-461.