| Yb2O3粉体化学镀银研究 |
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| 引用本文： | 俞洁,鲍小恒,堵永国,吴剑锋,杨光,刘飘. Yb2O3粉体化学镀银研究[J]. 电工材料, 2006, 0(4): 35-39 |
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| 作者姓名： | 俞洁 鲍小恒 堵永国 吴剑锋 杨光 刘飘 |
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| 作者单位： | 国防科技大学,航天与材料工程学院,湖南,长沙,410073;国防科技大学,航天与材料工程学院,湖南,长沙,410073;国防科技大学,航天与材料工程学院,湖南,长沙,410073;国防科技大学,航天与材料工程学院,湖南,长沙,410073;国防科技大学,航天与材料工程学院,湖南,长沙,410073;国防科技大学,航天与材料工程学院,湖南,长沙,410073 |
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| 摘 要： | 采用化学镀法制备Ag包覆Yb2O3复合粉末。利用场发射扫描电子显微镜(SEM)研究了还原剂、粉体预处理工艺对Yb2O3表面化学镀Ag镀覆效果的影响。研究了pH值、甲醛浓度、反应温度对Ag还原率的影响。结果表明:采用甲醛为还原剂,在经敏化活化后的Yb2O3粉体表面可以得到均匀致密的镀Ag层;通过调整pH值,选择适当的甲醛浓度,提高反应温度可以提高Ag还原率直至完全还原。
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| 关 键 词： | 化学镀 AgYb2O3 银还原率 电触点材料 |
| 文章编号： | 1671-8887(2006)04-0035-05 |
| 收稿时间： | 2006-09-01 |
| 修稿时间： | 2006-09-01 |
The Electroless Plating of Silver on Yb2O3 Powder |
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| YU Jie,BAO Xiao-heng,DU Yong-guo,WU Jian-feng,YANG Guang,LIU Piao. The Electroless Plating of Silver on Yb2O3 Powder[J]. Electrical Engineering Materials, 2006, 0(4): 35-39 |
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| Authors: | YU Jie BAO Xiao-heng DU Yong-guo WU Jian-feng YANG Guang LIU Piao |
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| Abstract: | The AgYb2 O3 composite powders were prepared by electroless plating of silver on ytterbia.The effects of reductant and pretreating process of ytterbia on silver coating homogeneity were studied by means of scanning electron microscope(SEM).The ratio of reduced silver was influenced by pH value,formaldehyde concentration and reaction temperature.The result shows that homogeneous silver coating on sensitized andactivated ytterbia can be obtained using formaldehyde as reductant.And all the silver ion can be reduced by adjusting pH value,choosing proper formaldehyde concentration and increasing reaction temperature. |
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| Keywords: | electroless plating AgYb2 O3 the ratio of reduced silver electric contact material |
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