Electrical breakdown characteristic of nanostructured W-Cu contacts materials

被引：0
|
作者：
Wang J. [1 ,3 ]
Chen W. [2 ]
Ding B. [3 ]
机构：
[1] School of Mechanical and Electrical Engineering, Xi'an Polytechnic University
[2] School of Materials Science and Engineering, Northwestern Polytechnical University
[3] School of Science, Xi'an Jiaotong University
来源：
Journal of Wuhan University of Technology-Mater. Sci. Ed. | 2006年 / 21卷 / 4期
基金：
中国国家自然科学基金;
关键词：
Electrical breakdown; Nanostructured materials; W-Cu alloy;
D O I：
10.1007/BF02841199
中图分类号：
学科分类号：
摘要：
Nanostructured (NS) W-Cu composite powder was prepared by mechanical alloying (MA), and nanostructured bulk of W-Cu contact material was fabricated by hot press sintering in an electrical vacuum furnace. The microstructure, electric conductivity, hardness and break down voltage of NS W-Cu alloys were measured and compared to those of conventional W-Cu alloys prepared by powder metallurgy. The experimental results show that microstructural refinement and uniformity can improve the breakdown behavior and the electric arc stability of nanostructured W-Cu contacts materials. Also, the nanostructured W-Cu contact material shows the characteristic of spreading electric arcs, which is of benefit to electric arc erosion.
引用
收藏
页码：32 / 35
页数：3
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