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
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.
李世杰, 刘伯颖, 李宾, 刘士臣. 电参数对铝合金微弧氧化陶瓷膜封孔的影响[J]. 电工技术学报, 2013, 28(1增): 110-114.
Li Shiejie, Liu Boying, Li Bin, Liu Shichen. Effect of Electric Parameters on Hole Sealing of Micro-Arc Oxided Ceramic Coatings Formed on Aluminum Alloy. Transactions of China Electrotechnical Society, 2013, 28(1增): 110-114.
2013, Vol. 28 
