高气压大电流放电条件下的电极烧蚀

Electrode erosion in high pressure and high current discharges

归纳了影响开关电极烧蚀量的因素,包括开关电极材料、放电条件等,分析了开关电极烧蚀特征与烧蚀后表面形貌,总结了开关电极烧蚀的主要机制———电极加热和电极材料去除机制。为了延长开关工作寿命,提出了减少开关电极烧蚀的措施,包括选用抗烧蚀性能优异的材料作为开关电极材料、采用合适的开关电极结构和优化的放电条件等。

Research on electrode erosion of switches in high pressure and high current discharges was reviewed.The factors,including electrode materials of switches,discharge condition,which affect electrode erosion of switches were concluded.The characteristics of electrode erosion of switches and surface structure of electrodes after discharges were analyzed.The mechanisms of electrode heating and electrode material removal were also summarized.To extend the lifetime of switches,several measures of decreasing electrode erosion were put forward,such as choosing excellent anti-erosion performance materials,appropriate structure of switches,and optimized discharge condition.