tungsten cathode
1.By introducing the basic principles and the constitutes of computed tomography(CT),the inner fine structure of the barium tungsten cathode analyzed by the microfocus industrial CT are discussed. These results indicate the excellent application of the microfocus industrial CT in the barium tungsten cathode.
3.The nanostructured W-La_2O_3 electrode materials were fabricated by high energy ball milling and hot pressed sintering in vacuum atmosphere. The influence of content of rare-earth oxide La_2O_3 on the electric properties of nanocrystalline tungsten electrode materials was investigated. The microstructure of cathode tip and La distribution after arc burning were observed through SEM and EDX.
