| 正脉冲电压对Mg-4Gd-3Y-0.5Zr合金微弧氧化膜组织形貌与耐蚀性能的影响 |
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| 引用本文： | 彭光怀,郭雪锋,张小联,韩宝军,方玲.正脉冲电压对Mg-4Gd-3Y-0.5Zr合金微弧氧化膜组织形貌与耐蚀性能的影响[J].江西有色金属,2009,23(4):18-20. |
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| 作者姓名： | 彭光怀 郭雪锋 张小联 韩宝军 方玲 |
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| 作者单位： | 赣南师范学院化学与生命科学学院,江西赣州341000 |
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| 摘 要： | 采用SEM、覆层测厚仪、电化学工作站等研究了正脉冲电压对Mg-4Gd-3Y-0.5Zr稀土镁合金双脉冲微弧氧化膜的组织形貌及耐蚀性能的影响。结果表明：随正脉冲电压的升高,膜层厚度增加,膜层表面微孔数量减少、孔径增大,烧结强度增加,裂纹增大;耐蚀性能先增强后降低,均显著优于合金基体;最佳正脉冲电压为450 V,腐蚀电位与腐蚀电流分别为-1.495 V、10-8.62 A/cm2。
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| 关 键 词： | 正脉冲电压 微弧氧化 耐蚀性 稀土镁合金 |
Effects of Positive Pulse Voltage on the Morphology and Corrosion Resistance of Micro-arc Oxidation Film of Rare Magnesium Alloy |
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| PENG Guang-huai,GUO Xue-feng,ZHA NG Xiao-lian,HAN Bao-jun,FANG Ling.Effects of Positive Pulse Voltage on the Morphology and Corrosion Resistance of Micro-arc Oxidation Film of Rare Magnesium Alloy[J].Jiangxi Nonferrous Metals,2009,23(4):18-20. |
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| Authors: | PENG Guang-huai GUO Xue-feng ZHA NG Xiao-lian HAN Bao-jun FANG Ling |
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| Affiliation: | (School of Chemistry and Life Science, Gannan Normal University, Ganzhou 341000, Jiangxi, China) |
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| Abstract: | The effects of positive pulse voltage on the morphology and corrosion resistance of micro-arc oxidation film of Mg-4Gd-3Y-0.5Zr alloy treated by double pulse micro-arc technique was investgated by SEM,coating thickness gauge and electrochemical workstation etc.The results show that fwer pores with larger diameters,more strength sintering and larger crack were found on the film when the positive pules voltage increased;Corrosion resistance of the film,which significantly better than the alloy substrate,increwere-1.495 V and 10-8.62 A/cm2. |
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| Keywords: | positive pulse voltage micro-arc oxidation corrosion resistance rare magnesium alloy |
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