石墨电极烧蚀机理及实验

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Abstract In a high-powered single pulse device, graphite electrode is better than other ordinary metal electrodes for high energy transfer pulse discharge. This paper mainly investigates the erosion mechanism of graphite electrode with the theory of thermodynamics and experiment results in high energy pulse discharge. Based on thermodynamic principles, the simplified mathematical model of the electrode erosion process is built. Because of the special thermodynamic properties, the duration of temperature rising process on the graphite electrode surface could be ignored, during the microsecond or longer discharges duration. It can be known the relationship between electrode erosion and transfer charge is linear. That can be proved by results of experiments.

Key words： Spark gap switch graphite electrode erosion mechanism transfer charge

Received: 02 November 2011 Published: 27 November 2013

PACS:

TN242

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	Articles by authors
	Zeng Han
	Lin Fuchang
	Cai Li
	Liu Gang
	Li Li
	Yu Feng
	Qi Xiangdong

Cite this article:

Zeng Han,Lin Fuchang,Cai Li等. Mechanism and Experiment of Graphite Electrode Erosion[J]. Transactions of China Electrotechnical Society, 2013, 28(1): 43-49.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I1/43

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