Study on erosion mechanism of graphite electrode in two-eletrode spark gap

Author

Zeng, Han ; Lin, Fuchang ; Li, Cai ; Li, Li ; Liu, Gang ; Yu, Feng

Author_Institution

State Key Lab. of Adv. Electromagn. Eng. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China

fYear

2011

fDate

19-23 June 2011

Firstpage

766

Lastpage

771

Abstract

In a high-powered single pulse system, the graphite electrode is better than other ordinary metal electrodes for high energy transfer and pulse discharge. The erosion mechanism of graphite electrode is investigated in the paper with the theory of thermodynamics and the results of experiment. The graphite electrode erosion process of high-powered spark gap switch is analyzed, based on the set up of a simplified mathematical model. From the model, it is shown that the relationship of the graphite electrode erosion and the charge transfer is linear, which is accordant with the results of experiment.

Keywords

discharges (electric); electrodes; erosion; graphite; pulsed power supplies; pulsed power switches; spark gaps; charge transfer; energy transfer; erosion mechanism; graphite electrode erosion process; high-powered single pulse system; high-powered spark gap switch; mathematical model; metal electrodes; pulse discharge; thermodynamics theory; two-eletrode spark gap; Cathodes; Discharges; Equations; Heating; Materials; Mathematical model;

fLanguage

English

Publisher

ieee

Conference_Titel

Pulsed Power Conference (PPC), 2011 IEEE

Conference_Location

Chicago, IL

ISSN

2158-4915

Print_ISBN

978-1-4577-0629-5

Type

conf

DOI

10.1109/PPC.2011.6191508

Filename

6191508