Barium - targets for scandium oxide dispenser cathode

摘要

The present invention relates to production barium-scandate barium-Scandate dispenser cathode or other materials for technical field. Target (66) includes the mixture of BaO, and CaO, Al2O3 and SC2O3 tend to be more stable, and higher (the scandium oxide content archipelago of scandium oxide) is however, increased scandium oxide content leads to amount of decrease emissivities. BaO and CaO reactions in a kind of destabilizing effect and the component for being cancelled more inert SC2O3 and AI2O3, because not only increased scandium oxide stable content material, but also increased alumina (aluminium oxide) content can improve stability.