6063铝合金微弧氧化陶瓷涂层的显微组织和力学性能

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Bibliographic Details
Published in中国有色金属学报：英文版 Vol. 25; no. 10; pp. 3323 - 3328
Main Author 项南 宋仁国 赵坚 李海 王超 王芝秀
Format Journal Article
LanguageEnglish
Published 2015
Subjects
6063铝合金
力学性能
微弧氧化
显微组织
纳米添加剂
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Bibliography:43-1239/TG
The microstructure and mechanical properties of ceramic coatings formed on 6063 aluminium alloy obtained in silicate-,borate- and aluminate-based electrolyte without and with nanoadditive Al2O3 and TiO2 by micro-arc oxidation（MAO） were studied by scanning electron microscopy（SEM）,energy-dispersive X-ray spectroscopy（EDS）,X-ray diffraction（XRD）,microhardness and friction-abrasion tests,respectively.SEM results show that coatings with nanoadditive have less porosities than those without nanoadditive.XRD results reveal that nanoadditive-containing coatings contain more oxides compared with nanoadditive-free coatings in all cases,which are consistent with the EDS analysis.Mechanical properties tests show that nanoadditive Al2O3-containing coatings have higher microhardness values compared with the other coatings obtained in silicate-,borate- and aluminate-based electrolyte.On the other hand,nanoadditive has a positive effect on improving the wearing-resistance of MAO coatings in all cases.Furthermore,the borate-MAO coatings present an inferior anti-wearing property compared with the silicate- and aluminate-MAO coatings for both the nanoadditive-free and nanoadditive-containing coatings.
6063 aluminium alloy; micro-arc oxidation; microstructure; mechanical properties; nanoadditive
Nan XIANG, Ren-guo SONG, Jian ZHAO, Hai LI, Chao WANG, Zhi-xiu WANG（ 1. School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China; 2. Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou 213164, China）
ISSN:1003-6326