| HAO Kang-da,MIAO Jing-guo,CHEN Qiu-rong,DONG Xiang-yun,WU Run,WEI Zhong-ling.Effect of Sodium Aluminate Concentration on Properties of Micro-arc Oxidation Coatings on Aluminum Alloy 7075[J],42(3):49-51,55 |
| Effect of Sodium Aluminate Concentration on Properties of Micro-arc Oxidation Coatings on Aluminum Alloy 7075 |
| Received:January 09, 2013 Revised:February 20, 2013 |
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| DOI： |
| KeyWord:sodium aluminate micro-arc oxidation morphology |
| Author | Institution |
| HAO Kang-da |
Materials and Metallurgy College,Wuhan University of Science and Technology,Wuhan , China |
| MIAO Jing-guo |
Materials and Metallurgy College,Wuhan University of Science and Technology,Wuhan , China;Department of Mechanical and Electrical Engineering, Jiaxing Nanyang Vocational Technology College, Jiaxing , China |
| CHEN Qiu-rong |
Jiaxing Light Alloys Technology and Engineering Centre, Chinese Academy of Sciences, Jiaxing , China;Jiaxing Zhongke Asia Magnesium Technology Co. , Ltd. , Jiaxing , China |
| DONG Xiang-yun |
Materials and Metallurgy College,Wuhan University of Science and Technology,Wuhan , China |
| WU Run |
Materials and Metallurgy College,Wuhan University of Science and Technology,Wuhan , China |
| WEI Zhong-ling |
Jiaxing Light Alloys Technology and Engineering Centre, Chinese Academy of Sciences, Jiaxing , China |
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| Abstract: |
| Applying the technology of micro-arc oxidation to form ceramic coatings on aluminum alloy 7075 . The thickness and micro-hardness values of coatings in different concentration of sodium aluminate were tested, and morphology of surface and cross-section of coatings were observed by using scanning electron microscope ( SEM) and metallographic microscope. Results showed that, embossments like " volcanic vent " were presented on the surface of MAO coatings prepared in different sodium aluminate concentration. In addition, metallurgical bonding mode like zigzag was observed between coating and substrate, coatings were continuous and symmetrical with micro-hardness of 1080 HV0 . 1 . |
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