真空电弧阴极斑点的研究进展

In this paper, basic concepts and some investigation methods of vacuum arc cathode spot are introduced. In order to understand the complex physical phenomena, the influence of physical properties and microstructures of electrodes on the characteristics of cathode spots is also reviewed. For pure element materials, their thermal and electrical properties have great influences on the characteristics of cathode spots. Whereas, for alloys composed of multiphase and composites, the microstructure plays an important role in the cathode spot characteristics. The development of nanostructured materials and novel metallic glasses provide great advantage for the investigation of the vacuum arc cathode spots.