Electrode erosion research of gas spark gap

Xie Changming; Tan Xiaohua; Du Tao; Tang Binghua; Shang Shaohuan; Li Rong; Li Zhenglin

doi:10.3788/HPLPB201426.015003

Volume 26 Issue 01

Jan. 2014

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Article Navigation > High Power Laser and Particle Beams > 2014 > 26(01): 015003

Zhou Xiaosong, Shen Huahai, Peng Shuming, et al. Thermal desorption behavior of ion-implanted helium from erbium and scandium films[J]. High Power Laser and Particle Beams, 2012, 24: 1169-1172. doi: 10.3788/HPLPB20122405.1169

Citation:

Xie Changming, Tan Xiaohua, Du Tao, et al. Electrode erosion research of gas spark gap[J]. High Power Laser and Particle Beams, 2014, 26: 015003. doi: 10.3788/HPLPB201426.015003

Citation:

Xie Changming, Tan Xiaohua, Du Tao, et al. Electrode erosion research of gas spark gap[J]. High Power Laser and Particle Beams, 2014, 26: 015003. doi: 10.3788/HPLPB201426.015003

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Electrode erosion research of gas spark gap

doi: 10.3788/HPLPB201426.015003

1.
Institute of Electronic Engineering,CAEP,P.O.Box 919-518,Mianyang 621900,China

Received Date: 2013-09-04
Rev Recd Date: 2013-10-15
Publish Date: 2014-01-15

Abstract

Abstract

Electrode erosion of gas spark gaps (GSGs) with Mo, WCu, and W main electrodes in current discharge was studied. Micrographs and erosion rates of GSG electrodes after erosion were investigated. Characteristic of electrode erosion was also analyzed. The main electrode erosion rates of Mo, WCu, and W GSG switches are 3.3210-2, 2.6310-2, and 1.7410-2 C-1m-2, respectively. The W GSG exhibits the minimum main electrode erosion rate. The experimental results indicate that main electrodes are heavily ablated at the center and present cracks and holes evidently. The main electrodes of Mo GSG exhibit melted state on the surface and Mo cathode presents a great quantity of cracks with 10 m in width and pores with 10 m in diameter. A few sphere W saliences with 20 m in diameter form on the surface of main electrodes of WCu and W GSG switches. Splashing particles are deposited on the inwall of sleeve of GSG. The WCu, Mo and W switches present the biggest deposited particles with 10 m in diameter, mediate particles with 2 m in diameter, and the smallest particles with diameter less than 1 m, respectively. Therefore, tungsten which presents excellent anti-erosion performance could be selected firstly as main electrode materials of GSG.
- gas spark gap,
- electrode materials,
- electrode erosion,
- erosion rate,
- micrograph,
- EDX elemental analysis

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