梁成浩,梁坤,黄乃宝.LY12铝合金复合氧化膜在硫酸锌溶液中交流电沉积行为研究[J].,2012,(5):625-630 |
LY12铝合金复合氧化膜在硫酸锌溶液中交流电沉积行为研究 |
Research on AC deposition behavior on LY12 aluminum alloy composite oxide film in zinc sulfate solution |
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DOI:10.7511/dllgxb201205001 |
中文关键词: LY12铝合金 阳极氧化膜 正弦交流电 锌 |
英文关键词: LY12 aluminum alloy anodic oxide film sinusoidal AC zinc |
基金项目:“八六三”国家高技术研究发展计划资助项目(2009AA05Z120). |
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中文摘要: |
通过示波器跟踪检测LY12铝合金硫酸-磷酸复合氧化膜在硫酸锌溶液中交流电沉积过程的电流变化,考察了锌离子在复合膜中的反应历程.实验结果表明:接通电源后的一段时间内,阴、阳极峰值电流变化剧烈,变化趋势相似,而且阴极的峰值电流比阳极峰值电流大;随后阴、阳极峰值电流逐渐趋于一致;交流电沉积过程中复合膜颜色发生变化,锌沉积到复合膜孔中.LY12铝合金复合氧化膜在硫酸锌溶液中沉积300 s时,锌沉积量为31.404 μg/cm 2,主要分布在复合膜孔底约2 μm范围内.锌在复合膜孔中的沉积量与沉积时间呈对数关系. |
英文摘要: |
By using alternating current (AC) deposition, the reaction process of zinc ion in the compound oxide layer is investigated through tracking the current change in the process of depositing Zn on the surface of LY12 aluminum alloy′s sulfate - phosphate composite oxide film (composite film) by using oscilloscopes. The experimental results indicate that zinc mainly distributes at the bottom of composite film holes and is about 2 μm to the bottom when LY12 aluminum alloy composite oxide film is deposited in zinc sulfate solution for 300 s. The sediment yield is 31.404 μg/cm 2. At the initiative period of switching on power supply, the anodic and the cathodic peak currents through the oxide film change very rapidly, and the latter′s value is greater than the former′s. After that, they become equal. At the same time, the composite film′s color changes, which indicates Zn is deposited into the composite film hole. The sediment yield of zinc on the composite film and time of sediment have a logarithmic relationship. |
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