陈松
,
李慕阳
,
谢明
,
任县枬
,
陈静洪
,
王塞北
,
李爱坤
,
刘满门
贵金属
对熔桥基本行为的研究一直是电接触领域的重点，本研究系统总结柚熔桥的基础枞论，主要实验和测试手段，主要模拟研究的手段，以及国内外研究者多年来在熔桥方面取得的重要成果，总结柚熔桥研究中特别是贵金属基电接触材料研究中未解决的基础问题，简要介绍柚本单位的相关研究成果，最后展望柚熔桥研究的发展方向和应用前景。
关键词:
熔桥
,
电接触
,
贵金属
,
电弧
Wenge CHEN
材料科学技术（英文）
Nanostructured (NS) W-Cu composite powder was prepared by mechanical alloying (MA), and nanostructured bulk of W-Cu contact material was fabricated by hot pressed sintering in an electrical vacuum furnace. The microstructure, electric conductivity, hardness, breakdown voltage and arcing time of NS W-Cu alloys were measured and compared to conventional W-Cu alloys prepared by powder metallurgy. The results show that microstructural refinement and uniformity can improve the breakdown behavior, the electric arc stability and the arc extinction ability 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.
关键词:
Nanostructured materials
,
null
,
null
,
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