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The Study on the Overall Plasma Electrolytic Oxidation for 6061-7075 Dissimilar Aluminum Alloy Welded Parts Based on the Dielectric Breakdown Theory
Chen, YF; Song, XC; Zhou, JX; Liu, HT; Yang, YS; Song, XC (reprint author), Shandong Acad Sci, Adv Mat Inst, Jinan 250014, Shandong, Peoples R China.
2018
Source PublicationMATERIALS
ISSN1996-1944
Volume11Issue:1Pages:-
AbstractElectrical connection of dissimilar metals will lead to galvanic corrosion. Therefore, overall surface treatment is necessary for the protection of dissimilar metal welded parts. However, serious unbalanced reactions may occur during overall surface treatment, which makes it difficult to prepare integral coating. In this paper, an overall ceramic coating was fabricated by plasma electrolytic oxidation to wrap the 6061-7075 welded part integrally. Moreover, the growth mechanism of the coating on different areas of the welded part was studied based on the dielectric breakdown theory. The reaction sequence of each area during the treatment was verified through specially designed dielectric breakdown tests. The results showed that the high impedance overall of ceramic coating can inhibit the galvanic corrosion of the 6061-7075 welded part effectively.; Electrical connection of dissimilar metals will lead to galvanic corrosion. Therefore, overall surface treatment is necessary for the protection of dissimilar metal welded parts. However, serious unbalanced reactions may occur during overall surface treatment, which makes it difficult to prepare integral coating. In this paper, an overall ceramic coating was fabricated by plasma electrolytic oxidation to wrap the 6061-7075 welded part integrally. Moreover, the growth mechanism of the coating on different areas of the welded part was studied based on the dielectric breakdown theory. The reaction sequence of each area during the treatment was verified through specially designed dielectric breakdown tests. The results showed that the high impedance overall of ceramic coating can inhibit the galvanic corrosion of the 6061-7075 welded part effectively.
description.department[chen, yanfei ; song, xiaocun ; zhou, jixue ; liu, hongtao] shandong acad sci, adv mat inst, jinan 250014, shandong, peoples r china ; [zhou, jixue] shandong engn res ctr lightweight automobiles mag, jinan 250014, shandong, peoples r china ; [liu, hongtao] shandong key lab high strength lightweight metall, jinan 250014, shandong, peoples r china ; [yang, yuansheng] chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china
KeywordMicro-arc Oxidation Az31 Magnesium Alloy Corrosion Behavior Oxide-layers Galvanic Corrosion Al-alloy Microstructure Coatings Titanium Inhibition
Subject AreaMaterials Science, Multidisciplinary
Funding OrganizationNational key research and development program of China [2016YFB0301105, 2017YFB0103904]; Key research and development plan of Shandong province [2017CXGC0404]; National key research and development program of China [2016YFB0301105, 2017YFB0103904]; Key research and development plan of Shandong province [2017CXGC0404]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79597
Collection中国科学院金属研究所
Corresponding AuthorSong, XC (reprint author), Shandong Acad Sci, Adv Mat Inst, Jinan 250014, Shandong, Peoples R China.
Recommended Citation
GB/T 7714
Chen, YF,Song, XC,Zhou, JX,et al. The Study on the Overall Plasma Electrolytic Oxidation for 6061-7075 Dissimilar Aluminum Alloy Welded Parts Based on the Dielectric Breakdown Theory[J]. MATERIALS,2018,11(1):-.
APA Chen, YF,Song, XC,Zhou, JX,Liu, HT,Yang, YS,&Song, XC .(2018).The Study on the Overall Plasma Electrolytic Oxidation for 6061-7075 Dissimilar Aluminum Alloy Welded Parts Based on the Dielectric Breakdown Theory.MATERIALS,11(1),-.
MLA Chen, YF,et al."The Study on the Overall Plasma Electrolytic Oxidation for 6061-7075 Dissimilar Aluminum Alloy Welded Parts Based on the Dielectric Breakdown Theory".MATERIALS 11.1(2018):-.
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