摘要
从机理上讨论了激光诱导放电采用阴极性放电可改善放电坑形貌,并从实验上得出放电坑直径在不同放电介质下随放电脉宽的变化关系。当工件表面涂层为聚四氟乙烯时,研究了放电坑由单坑变为多坑形貌的原因是电脉冲后期通道中电子供给不足,电弧由聚集型过渡到扩散型,导致阳极斑点不稳定。
It is discussed that the breakdown Voltage will be reduced and the texturing crater morphology will be improved in mechanism, when adopting cathodal discharge in processing. The relationship between diameter of craters and pulse-width Of the discharge is reached. The reason of single crater changed into multi-craters is investigated that the electrons in the discharge chunnel are supplied shortage in the later discharge pulse.
出处
《应用激光》
CSCD
北大核心
2007年第2期85-87,共3页
Applied Laser
关键词
激光诱导放电
形貌
脉宽
阳极斑点
Laser guiding discharge
morphology
pulse-width
anode spot
