| 高能球磨及掺杂对AgSnO2触头材料性能的影响 |
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| 引用本文： | 甘卫平,李晶. 高能球磨及掺杂对AgSnO2触头材料性能的影响[J]. 粉末冶金材料科学与工程, 2006, 11(5): 295-299 |
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| 作者姓名： | 甘卫平 李晶 |
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| 作者单位： | 中南大学,材料科学与工程学院,长沙,410083 |
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| 摘 要： | 利用化学共沉淀法及高能球磨工艺制备微米级Ag包覆SnO2复合粉末，然后采用冷等静压和烧结热挤压法制备AgSnO2材料。通过对组织结构的观察及材料性能的测试，表明添加微量元素能提高Ag对SnO2的润湿性，改善AgSnO2材料熔体的粘性。利用高能球磨工艺能制备出10μm以下的AgSnO2粉末，其SnO2均匀分布在Ag基体中。所得材料组织弥散均匀，晶粒细小，密度达9．94g／cm^3，硬度为HV109，具有优良的加工和使用性能。
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| 关 键 词： | AgSnO2触头材料 化学共沉淀 高能球磨 |
| 文章编号： | 1673-0224（2006）5-295-05 |
| 收稿时间： | 2006-03-30 |
| 修稿时间： | 2006-03-302006-04-06 |
Effects of high-energy ball milling and dopant on AgSnO2 contact material''''s properties |
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| GAN Wei-ping,LI Jing. Effects of high-energy ball milling and dopant on AgSnO2 contact material''''s properties[J]. materials science and engineering of powder metallurgy, 2006, 11(5): 295-299 |
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| Authors: | GAN Wei-ping LI Jing |
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| Affiliation: | School of Material Science and Engineering, Central South University, Changsha 410083, China |
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| Abstract: | AgSnO2 contact material is developed by chemical co-precipitation, high energy ball milling and powder sintering as well as hot extrusion. Analysis and testing are made to investigate its structure and physical properties such as density, hardness, resistivity and arc erosion, etc. The test results indicate that the physical properties are remarkably improved by high-energy ball milling, the final microstructure consists of finer and more dispersive particles than that of conventional powder metallurgy AgSnO2 contact material, and the machinability of the AgSnO2 has improved by this technology. |
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| Keywords: | AgSnO2 contact material chemical co - precipitation high-energy ball milling |
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