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| Effect of Electric Parameters on Hole Sealing of Micro-Arc Oxided Ceramic Coatings Formed on Aluminum Alloy |
| Li Shiejie1, Liu Boying2, Li Bin2, Liu Shichen2 |
1. Materials Science and Engineering, Hebei University of Technology Tianjin 300130 China;
2. Educational administration, Hebei University of Technology Tianjin 300401 China |
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Abstract Using different electric parameters, the micro-arc oxided ceramic membrane formed on aluminum alloy, sealing the holes in aluminum nitrate solution. The research study the effects of hole sealing in different pulse modes, voltages, pulse frequencies, hole sealing times and duty cycles. A large number of experimental studies show that, in double pulse mode, the best hole sealing technology parameters are: frequency was 200Hz, duty cycle was 40%, closed voltage was 70V to 90V, closed time was 30min to 45min. The dynamic potential polarization curves of 5% NaCl (pH=7) shows that, double pulse hole sealing can increase the corrosion resistant of ceramic membrane.
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Received: 06 January 2013
Published: 12 December 2013
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[1] Gu Yanhong, Chen Chengfu, Sukumar Bandopadhyay. Corrosion mechanism and model of pulsed DC microarc oxidation treated AZ31 alloy in simulated body fluid[J]. Applied Surface Science2012(258): 6116-6126.
[2] Guo Qiaoqin, Jiang Bailing, Li Jianping. Corrosion resistance of micro-arc oxidized ceramic coating on cast hypereutectic alloy[J]. Science direct, 2010(20): 2204-2207.
[3] 杨丽珍, 李娟. 铝合金的等离子微弧氧化表面改性研究[J]. 北京印刷学院学报, 2009(2): 21-23.
[4] 张汀, 袁航颜, 余仁. 铝合金微弧氧化陶瓷膜的组织与性能研究[J]. 科学技术与工程, 2011,1(11): 154-158.
[5] 杨明家, 周大伟, 张守文, 等. 铝合金微弧氧化陶瓷膜研究[J]. 佳木斯大学学报, 2010, 28(2): 245-247.
[6] 王志平, 郑晓, 孙宇博. 纯铝微弧氧化-电泳膜层制备工艺及其耐蚀性[J]. 腐蚀与防护, 2010, 31(6): 488-498.
[7] 徐昌盛, 张三平, 刘秀生, 等. 金属表面陶瓷涂层封孔技术研究[J]. 材料保护, 2011, 44(4): 65-68.
[8] S. Syed Azim, A.Satheesh, K. K. Ramu et al. Studies on graphite based conductive paint coatings[J]. Progress in Organic Coatings.2006(55): 1-4.
[9] 朱祖芳. 铝合金阳极氧化与表面处理技术[M]. 北京: 化学工业出版社, 2004.
[10] 张冰. 基于超音速电弧喷涂技术的参数优化及防腐蚀涂层研究[D]. 济南: 山东理工大学, 2007. |
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2013, Vol. 28 
