中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Effect of the microstructure of electrode materials on arc cathode spot dynamics

文献类型:期刊论文

作者Y. P. Wang ; C. Y. Zhang ; H. Zhang ; B. J. Ding ; K. Lu
刊名Journal of Physics D-Applied Physics
出版日期2003
卷号36期号:21页码:2649-2654
关键词cucr contact materials vacuum arcs temperature breakdown strength motion
ISSN号0022-3727
中文摘要The role of the microstructure of cathode materials in the geometrical parameters and dynamic processes of cathode spots is studied on the basis of investigation of the microscopic traces of vacuum arcs without an external magnetic field. The arc erosion pattern shows that spot craters locate on the phases with weak voltage withstanding, whose size, morphology and distribution determine those of the arc spots. The spot tracks over the cathode alloys with ultra-fine microstructure disperse to a greatly increased electrode area, suggesting that the spot motion is controlled by the microstructure of the electrode materials. A proposed spot dynamics model infers that the spot velocity may increase by two orders when the typical microstructure scale is less than a characteristic value, i.e. the spot fragment size. It is concluded that the microstructure, including the constituent phases and their size, is an important factor dominating the microscopic migration mechanism of arc cathode spots.
原文出处://WOS:000186845900010
公开日期2012-04-14
源URL[http://ir.imr.ac.cn/handle/321006/36066]  
专题金属研究所_中国科学院金属研究所
推荐引用方式
GB/T 7714
Y. P. Wang,C. Y. Zhang,H. Zhang,et al. Effect of the microstructure of electrode materials on arc cathode spot dynamics[J]. Journal of Physics D-Applied Physics,2003,36(21):2649-2654.
APA Y. P. Wang,C. Y. Zhang,H. Zhang,B. J. Ding,&K. Lu.(2003).Effect of the microstructure of electrode materials on arc cathode spot dynamics.Journal of Physics D-Applied Physics,36(21),2649-2654.
MLA Y. P. Wang,et al."Effect of the microstructure of electrode materials on arc cathode spot dynamics".Journal of Physics D-Applied Physics 36.21(2003):2649-2654.

入库方式: OAI收割

来源:金属研究所

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