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Vacuum Breakdown Behavior of CuWCr Composites

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Abstract:

The Cu20W70Cr10 composites were fabricated by two methods which are the conventional powder metallurgy, and mechanical alloying to prepare WCr compound powders, followed by sintering and infiltration. The erosion behavior of CuWCr composites under breakdown was investigated. The surfaces of the composites before and after erosion and the mechanism of arc erosion were studied by scanning electron microscopy. The results show that the CuWCr composites prepared by mechanical alloying have superfine microstructure, uniform composition and high density, thus result in good characteristics of diffusing arcs and arc eroding endurance. Arc erosion zones are dispersive and uniform on the surfaces with some flat eroding pits. The Cu20W70Cr10 composites have excellent electrical properties such as high breakdown voltage, low chopping current and long arc life.

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Periodical:

Materials Science Forum (Volume 569)

Pages:

125-128

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.569.125

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Online since:

January 2008

Authors:

Peng Xiao, Zhi Kang Fan

Keywords:

Breakdown Voltage, Chopping Current, CuWCr Composite, Vacuum Breakdown

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© 2008 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] G.G. Lee, G. H Ha and B. K Kin: Powder Metal. 43(2000), p.79.

Google Scholar

[2] G. Paul. Slade, Fellow: IEEE Transactions on components Packaging, and Manufacturing technology. 17(1994), p.96.

Google Scholar

[3] Zhikang. Fan, Shuhua. Liang and Xu. Xue: Nonferrous Met. Soc. China. 11(2001), p.835.

Google Scholar

[4] P. Frey, N. Klink, R. Michal and K.E. Saeger: IEEE Trans. Plasma Sci. 17(1989), p.734.

Google Scholar

[5] Chengyu Zhang, Yaping Wang, Zhimao Yang, Yong Guo ang Bingjun Ding: Microstructure and properties of vacuum induction melted CuCr25 alloys. 366(2004), p.289.

DOI: 10.1016/j.jallcom.2003.07.001

Google Scholar

[6] K. Ozawa, K. Matsumoto, T. Nakanishi, K. Yoshigae, M. Yamazaki and H. Shinohara: In Proc. Int. Conf. on Electrical Contacts, Electromechanical Components and their Applications. (1986), p.823.

Google Scholar

[7] H. Kippenberg: 13th Int. conf. on Electric Contacts, Zurich. (1986), p.140.

Google Scholar

[8] M B Shulman, P G Slade, L D Loud and W Li: IEEE Transactions on components Packaging, and Manufacturing technology, 22(1999), p.405.

Google Scholar

[9] Zhikang. Fan, Shuhua. Liang, Hongwang. Yang and Peng. Xiao: Trans Nonferrous Met Soc China, 13(2003), p.267.

Google Scholar

[10] Peng. Xiao, Shuhua. Liang, Weibing. Zhao, Zhikang. Fan: Key Engineering Materials, 334-335(2007), p.173.

Google Scholar

[11] Peng. Xiao, Shuhua. Liang, Qingyan. Peng, Zhikang. Fan: Key Engineering Materials, 334-335(2007).

Google Scholar