| 掺杂La_2O_3的CuW电触头的组织及电性能 |
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| 引用本文： | 王玲玲,梁淑华,肖鹏,范志康.掺杂La_2O_3的CuW电触头的组织及电性能[J].北京科技大学学报,2008,30(12). |
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| 作者姓名： | 王玲玲 梁淑华 肖鹏 范志康 |
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| 作者单位： | 西安理工大学材料科学与工程学院,西安,710048 |
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| 基金项目： | 教育部新世纪优秀人才计划资助项目
，
国家自然科学基金资助项目
，
陕西省科技攻关计划资助项目
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| 摘 要： | 采用液-固掺杂工艺将La(NO3)3与WO3混合,经干燥、La(NO3)3裂解和WO3还原等工艺制备含有La2O3的稀土W粉,采用粉末冶金-熔渗法制备含有La2O3的CuW电触头;研究了保温时间对La(NO3)3裂解的影响以及La2O3对CuW电触头性能的影响. 结果表明:用液-固混料法制备的稀土W粉,La2O3分布均匀,粉末粒度较细;La(NO3)3裂解粉末的颗粒随着保温时间的延长而长大;掺杂La2O3的CuW触头耐电弧烧蚀性能有显著的提高.
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| 关 键 词： | 电触头 掺杂 裂解 氧化镧 |
Effect of La_2O_3 on the microstructure and properties of CuW electrical contact materials |
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| WANG Lingling,LIANG Shuhua,XIAO Peng,FAN Zhikang.Effect of La_2O_3 on the microstructure and properties of CuW electrical contact materials[J].Journal of University of Science and Technology Beijing,2008,30(12). |
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| Authors: | WANG Lingling LIANG Shuhua XIAO Peng FAN Zhikang |
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| Institution: | WANG Lingling,LIANG Shuhua,XIAO Peng,FAN Zhikang School of Material Science & Engineering,Xi\'an University of Technology,Xi\'an 710048,China |
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| Abstract: | W powders with rare earth oxide La2O3 were prepared by liquid-solid blending method,which includes mixing La(NO3)3 and WO3,drying,decomposition of La(NO3)3 and reduction of WO3.CuW electrical contact materials with La2O3 were fabricated by powder metallurgy-infiltration technology.The effect of holding time on the revivification of La(NO3)3 and that of La2O3 addition on the properties of CuW electric contact materials were investigated.The results show that La2O3 distributes uniformly in fine tungsten compo... |
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| Keywords: | electric contact material doping decomposition lanthanum oxide |
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