Influence of Surface Carburization of Machinable Ceramics on Its Pulsed Flashover Characteristics in Vacuum

ZHENG Nan; HUANG Xuezeng; MU Haibao; ZHANG Guanjun

Plasma Science and Technology > 2011 > 13(6): 656-660.

ZHENG Nan, HUANG Xuezeng, MU Haibao, ZHANG Guanjun. Influence of Surface Carburization of Machinable Ceramics on Its Pulsed Flashover Characteristics in Vacuum[J]. Plasma Science and Technology, 2011, 13(6): 656-660.

Citation:

PDF (848 KB)

Influence of Surface Carburization of Machinable Ceramics on Its Pulsed Flashover Characteristics in Vacuum

State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi 'an 710049, China

Funds: supported in part by the National Natural Science Foundation of China (Nos. 50937004, 50777051) and by NSFC-JSPS Joint Project (50911140103).

More Information

Received Date: July 19, 2011

Graphical Abstract

Abstract

Abstract

For pulsed power devices, surface flashover phenomena across solid insulators greatly restrict their overall performance. In recent decades, much attention has been paid on enhancing the surface electric withstanding strength of insulators, and it is found that surface treatment of material is useful to improve the surface flashover voltage. The carburization treatment is employed to modify the surface components of newly-developed machinable ceramics (MC) materials. A series of MC samples with different glucose solution concentration (0%, 10%, 20%, 30% and 40%) are prepared by chemical reactions for surface carburization modification, and their surface flashover characteristics are investigated under pulsed voltage in vacuum. It is found that the surface carburization treatment greatly modifies the surface resistivity of MCs and hence the flashover behaviors. Based on the reduction of surface resistivity and the secondary electron emission avalanche (SEEA) theory, the adjustment of flashover withstanding ability can be reasonably explained.
- Machinable ceramics,
- vacuum,
- surface carburization,
- secondary electron emission,
- flashover

FullText(HTML)

References (0)

[1]	Chengyan REN (任成燕), Chuansheng ZHANG (张传升), Duo HU (胡多), Cheng ZHANG (章程), Fei KONG (孔飞), Tao SHAO (邵涛), Ping YAN (严萍). Trap distribution of polymeric materials and its effect on surface flashover in vacuum[J]. Plasma Science and Technology, 2020, 22(4): 44002-044002. DOI: 10.1088/2058-6272/ab580d
[2]	Yanqin LIU (刘彦琴), Guangning WU (吴广宁), Guoqiang GAO (高国强), Jianyi XUE (薛建议), Yongqiang KANG (康永强), Chaoqun SHI (石超群). Surface charge accumulation behavior and its influence on surface flashover performance of Al₂O₃-filled epoxy resin insulators under DC voltages[J]. Plasma Science and Technology, 2019, 21(5): 55501-055501. DOI: 10.1088/2058-6272/aafdf7
[3]	Saravanan ARUMUGAM, Prince ALEX, Suraj Kumar SINHA. Feedback model of secondary electron emission in DC gas discharge plasmas[J]. Plasma Science and Technology, 2018, 20(2): 25404-025404. DOI: 10.1088/2058-6272/aa8e3f
[4]	LI Manping(李曼苹), WU Kai(吴锴), YANG Zhanping(杨战平), DING Man(丁曼), LIU Xin(刘鑫), CHENG Yonghong(成永红). Study on the Pulsed Flashover Characteristics of Solid-Solid Interface in Electrical Devices Poured by Epoxy Resin[J]. Plasma Science and Technology, 2014, 16(9): 856-860. DOI: 10.1088/1009-0630/16/9/09
[5]	HUANG Zhongde(黄忠德), YAO Xueling(姚学玲), CHEN Jingliang(陈景亮), QIU Aici(邱爱慈). Experimental Research of ZnO Surface Flashover Trigger Device of Pseudo-Spark Switch[J]. Plasma Science and Technology, 2014, 16(5): 506-511. DOI: 10.1088/1009-0630/16/5/11
[6]	YAO Xueling(姚学玲), CHEN Jingliang(陈景亮), HU Shangmao(胡上茂). Emission Current Characteristics of Triggered Device of Vacuum Switch[J]. Plasma Science and Technology, 2014, 16(4): 380-384. DOI: 10.1088/1009-0630/16/4/14
[7]	DUAN Ping(段萍), LI Xi (李肸), SHEN Hongjuan (沈鸿娟), CHEN Long (陈龙), E Peng (鄂鹏). Characteristics of a Sheath with Secondary Electron Emission in the Double Walls of a Hall Thruster[J]. Plasma Science and Technology, 2012, 14(9): 837-841. DOI: 10.1088/1009-0630/14/9/12
[8]	LI Shengtao, ZHANG Tuo, HUANG Qifeng, LI Weiwei, NI Fengyan, LI Jianying. Improvement of Surface Flashover Performance of Al2O3 Ceramics in Vacuum by Adopting A-B-A Insulation System[J]. Plasma Science and Technology, 2011, 13(2): 235-241.
[9]	HU Shangmao, YAO Xueling, CHEN Jingliang. Experimental Study of Electron Emission Characteristics of a Surface Flashover Trigger in a Low Pressure Environment[J]. Plasma Science and Technology, 2010, 12(6): 748-752.
[10]	YAO Xueling, CHEN Jingliang, SUN Wei. Experimental Study on Triggering Characteristics of a Surface Flashover Triggered Vacuum Switch[J]. Plasma Science and Technology, 2010, 12(6): 734-737.