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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
发表期刊MATERIALS
ISSN1996-1944
卷号11期号:1页码:-
摘要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.; 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.
部门归属[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
关键词Micro-arc Oxidation Az31 Magnesium Alloy Corrosion Behavior Oxide-layers Galvanic Corrosion Al-alloy Microstructure Coatings Titanium Inhibition
学科领域Materials Science, Multidisciplinary
资助者National 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]
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/79597
专题中国科学院金属研究所
通讯作者Song, XC (reprint author), Shandong Acad Sci, Adv Mat Inst, Jinan 250014, Shandong, Peoples R China.
推荐引用方式
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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