| MICROSTRUCTURE, CORROSION AND WEAR RESISTANCES OF MICROARC OXIDATION COATING ON Al ALLOY 7075 | |
| Wang Yanqiu1; Wang Yue2; Chen Paiming2; Shao Yawei1; Wang Fuhui1,3 | |
| Corresponding Author | Wang Yanqiu(qiuorwang@hrbeu.edu.cn) |
| 2011-04-01 | |
| Source Publication | ACTA METALLURGICA SINICA
 |
| ISSN | 0412-1961 |
| Volume | 47Issue:4Pages:455-461 |
| Abstract | 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. |
| Keyword | Al alloy microarc oxidation coating corrosion resistance wear resistance |
| Funding Organization | Fundamental Research Funds for the Central Universities |
| DOI | 10.3724/SP.J.1037.2011.00010 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Fundamental Research Funds for the Central Universities[HEUCFR1021] |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000290353700012 |
| Publisher | SCIENCE CHINA PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/105274 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wang Yanqiu |
| Affiliation | 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 |
| Recommended Citation 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. |
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