一、概论金属电极之间发生脉冲(火花)放电,各种形状的脉冲对两个电极或者其中一个产生强烈的破坏,这个现象称为金属的电腐蚀,在放电的许多实际应用中起着非常有害的作用。它使高压开关、继电器接触子、内燃发动机和其它放电仪器受到强烈破坏;这也是气体放电管工作破坏的主要原因之一。然而金属电蚀的现象最近却被用于金属加工。因而,研究脉冲放电对电极破坏的物理本质,有着十分重要的意义。在金属电火花破坏机理的研究上,存在着许多不同的学说与见解。如Б.Р.拉扎連柯和Н.И.拉扎連柯的热作用下的电动力说。他们认为火花放电时产生的高温将金属熔化和 I. INTRODUCTION Pulsed (spark) discharge occurs between metal electrodes, and pulses of various shapes strongly destroy both electrodes or one of them. This phenomenon is called electrocorrosion of metal and plays a very important role in many practical applications of discharge Harmful effect. It makes the high-pressure switch, relay contactors, internal combustion engines and other discharge equipment suffered strong damage; This is one of the main reasons for the work of gas discharge tube damage. However, the phenomenon of galvanic corrosion has recently been used for metal processing. Therefore, it is of great importance to study the physical properties of the electrode damage caused by pulse discharge. In the study of the mechanism of metal spark damage, there are many different doctrines and insights. Such as Б.Р. Lazarenko and Н.И. Lazarenko electrodynamic effect under the heat said. They think the high temperatures generated by the spark discharge melt the metal