| Electroplating zinc transition layer for electroless nickel plating on AM60 magnesium alloys |
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| 作者姓名： | 王晓民 周婉秋 韩恩厚 |
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| 作者单位： | [1]College of Chemistry and Life Science, Shenyang Normal University, Shenyang 110034, China [2]Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China |
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| 基金项目： | Foundation item： Project （202113191） supported by the Science Fund of Education 0ffice of Liaoning Province, China; Project supported by the Director Fund of Experimental Centre of Shenyang Normal University, China |
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| 摘 要： | Electroplating zinc coating as transition layer of electroless nickel plating on AM60 magnesium alloys was investigated. The zinc film can be deposited in a pyrophosphate bath at 50-60 ℃ under current density of 0.5-1.5 A/dm^2. A new fore treatment technology was applied by acid cleaning with a solution containing molybdate and phosphorous acid, by alkaline cleaning in a bath containing molybdate and sodium hydroxide. The subsequent electroless plating was carried out in nickel sulfate bath. The SEM observation shows that the deposition is uniform and compact. The polarization curve measurements show that the corrosion potential of the zinc plating in 3.5% NaCl is about -1.3 V（vs SCE） which is noble than that of magnesium substrate. The zinc eleetroplating can be applied as the pretreatment process for electroless nickel plating on magnesium alloys.
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| 关 键 词： | 电镀工艺 锌 镍 镁合金 金属处理 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2006-09-15 |
Electroplating zinc transition layer for electroless nickel plating on AM60 magnesium alloys |
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| WANG Xiao-min, ZHOU Wan-qiu, HAN En-Hou.Electroplating zinc transition layer for electroless nickel plating on AM60 magnesium alloys[J].Transactions of Nonferrous Metals Society of China,2006,16(A03):1798-1801. |
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| Authors: | WANG Xiao-min ZHOU Wan-qiu HAN En-Hou |
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| Abstract: | |
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| Keywords: | magnesium alloy AM60 electroplating zinc electroless nickel plating corrosion resistance |
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