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A new kind of cathode, LaC2-Mo cathode was prepared through spark plasma sintering method by using the mixed powder of LaC2 which was prepared by vacuum melting method and molybdenum. It was found that the emission properties of LaC2-Mo cathode increases with the LaC2 content increasing. The emission current density of LaC2-Mo cathode which contains 3.5wt.% LaC2 could reach 0.90A/cm2 at 1400b whereas...
A RE2O3-Mo cathode which contains Lu2O3 and Y2O3 with a certain weight ratio was made using a Sol-Gel technique and the spark plasma sintering technique. The maximum secondary emission yield (deltam) of this cathode could reach 4.6 while the activation temperature is only 900degC.
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