| 合金粉末预氧化法制备Ag-SnO2-Y2O3电接触材料的研究 |
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| 引用本文： | 符世继,谢明,陈力,杨有才,黎玉盛,刘莉.合金粉末预氧化法制备Ag-SnO2-Y2O3电接触材料的研究[J].稀有金属,2005,29(4):448-451. |
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| 作者姓名： | 符世继 谢明 陈力 杨有才 黎玉盛 刘莉 |
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| 作者单位： | 昆明贵金属研究所,云南,昆明,650221 |
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| 基金项目： | 中国科技部科研院所专项基金资助项目 (2003EG115031) |
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| 摘 要： | Ag-SnO2是各国电接触材料研究人员近年来新开发的一种无镉新型触头材料,它具有较好的导电导热性,优良的耐热性、抗电弧烧蚀性和抗熔焊性,是目前代替Ag-CdO的最理想材料。本文通过合金粉末预氧化法、复合粉体改性处理技术来制备Ag-SnO2-Y2O3电接触材料,添加稀土后合金粉末容易氧化,氧化粉体经改性处理后可有效改善氧化物颗粒与银基体间的润湿性、改善材料的后续加工性能,并且所制备的Ag-SnO2-Y2O3材料密度高、组织均匀、不存在宏观偏析,SnO2和Y2O3颗粒在材料中弥散均匀分布。
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| 关 键 词： | 预氧化 银氧化锡 电接触材料 组织性能 稀土 |
| 文章编号： | 0258-7076(2005)04-0448-04 |
| 修稿时间： | 2005年6月30日 |
Ag-SnO2-Y2O3 Electrical Contact Materials Prepared by Alloy Powder Pre-oxidation Method |
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| Fu Shiji,Xie Ming,Chen Li,Yang Youcai,Li Yusheng,Liu Li.Ag-SnO2-Y2O3 Electrical Contact Materials Prepared by Alloy Powder Pre-oxidation Method[J].Chinese Journal of Rare Metals,2005,29(4):448-451. |
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| Authors: | Fu Shiji Xie Ming Chen Li Yang Youcai Li Yusheng Liu Li |
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| Affiliation: | Fu Shiji*,Xie Ming,Chen Li,Yang Youcai,Li Yusheng,Liu Li |
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| Abstract: | Ag-SnO_2 is a kind of new contact material without Cd developed in many countries in recent years. It has better electric-conduct and heat-conduct property, excellent heat-resistance, good arc erosion-resistance and good weld-resistance properties. So it is the optimum material replacing Ag-CdO. Ag-SnO_2-Y_2O_3 contact material is prepared by alloy powder internal oxidation and modification of composite powders. The outcome shows that AgSn_5Y alloy powder is oxidized easily by adding Y; modification of powder may strengthen wetting of Ag and oxidation, and enhance the production property of material; Ag-SnO_2-Y_2O_3 contact material has high density, even microstructure and no segregation, and SnO_2 and Y_2O_3 disperse evenly in the material. |
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| Keywords: | pre-oxidation Ag-SnO_2 electrical contact materials microstructure and property rare earths |
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