强激光与粒子束, 2014, 26 (4): 045042, 网络出版: 2014-04-24   

不同电流下气体开关电极烧蚀特性实验研究

Experimental study on electrode erosion characteristics of spark gas switch under different current
作者单位
西北核技术研究所, 强脉冲辐射环境模拟与效应国家重点实验室, 西安 710024
摘要
在不同短路电流条件下,进行了不锈钢(1Cr18Ni9Ti)电极气体火花开关连续多次自击穿放电实验,通过测量电极质量损失、表面粗糙度和自击穿电压的变化,研究电极烧蚀特性及其对自击穿性能的影响。实验结果表明: 随着放电电流峰值和周期增大,电极材料烧损速率与电容电荷量呈线性增加,而电极表面烧蚀粗糙度与电流峰值呈线性增大,自击穿电压变化达到峰值和稳定区的放电次数减少,但稳定阶段的自击穿电压值及其相对标准偏差同时减少,五种放电电流情况下,自击穿电压概率密度分布均遵循高斯函数。
Abstract
Self-breakdown experiments were carried out with stainless steel (1Cr18Ni9Ti) electrode under different short current conditions. Electrode erosion and its effect on self breakdown were investigated by measuring various electrode mass loss, electrode surface roughness and breakdown voltage. The results are as follow: when current peak and periods increase, electrode mass loss rate and capacitance charge are linear, also the surface roughness and current peak are linear; when current peak and periods increase, the required breakdown numbers when self breakdown voltage comes to the peak and steady region decrease, also the self breakdown voltage and relative standard deviation in steady phase decrease; the distribution of self break down voltage probability follows Gauss distribution in all five current conditions.

黄涛, 罗维熙, 丛培天, 曾江涛, 孙铁平. 不同电流下气体开关电极烧蚀特性实验研究[J]. 强激光与粒子束, 2014, 26(4): 045042. Huang Tao, Luo Weixi, Cong Peitian, Zeng Jiangtao, Sun Tieping. Experimental study on electrode erosion characteristics of spark gas switch under different current[J]. High Power Laser and Particle Beams, 2014, 26(4): 045042.

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