Electrical breakdown characteristic of a Ce-doped W-Cu contact material
来源期刊：Rare Metals2010年第3期
论文作者：HU Kewen,CHEN Mianzhi,and YE Heng School of Materials Science and Engineering,Xi’an University of Technology,Xi’an ,China
文章页码：261 - 264
摘 要：W-Cu composite powder doped with Ce （1.5 wt.%） was prepared by mechanical alloying （MA）,and the W-Cu contact material was fabricated by hot pressing sintering in an electrical vacuum furnace.The microstructure,electric conductivity,hardness,and breakdown voltage of the Ce-doped W-Cu alloy were measured and compared with a conventional W-Cu alloy prepared by powder metallurgy.The results show that microstructural refinement and uniformity can improve the breakdown behavior and the electric arc stability of the Ce-doped W-Cu contact material.Also,the Ce-doped W-Cu contact material shows the characteristic of spreading electric arc,which is beneficial to electric arc erosion.
HU Kewen,CHEN Mianzhi,and YE Heng School of Materials Science and Engineering,Xi’an University of Technology,Xi’an 710048,China
摘 要：W-Cu composite powder doped with Ce （1.5 wt.%） was prepared by mechanical alloying （MA）,and the W-Cu contact material was fabricated by hot pressing sintering in an electrical vacuum furnace.The microstructure,electric conductivity,hardness,and breakdown voltage of the Ce-doped W-Cu alloy were measured and compared with a conventional W-Cu alloy prepared by powder metallurgy.The results show that microstructural refinement and uniformity can improve the breakdown behavior and the electric arc stability of the Ce-doped W-Cu contact material.Also,the Ce-doped W-Cu contact material shows the characteristic of spreading electric arc,which is beneficial to electric arc erosion.
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