PRESSED METAL-ALLOY PALLADIUM-BARIUM CATHODE AND METHOD OF ITS OBTAINING Russian patent published in 2018 - IPC C22C5/04 B22F3/16 H01J1/14 H01J9/04 H01J1/32 

FIELD: electricity.

SUBSTANCE: pressed metal-alloy palladium-barium cathode is made of a three-layer of two continuous palladium ribbons and a ribbon placed between them with spaced holes at equal distances forming the cells with powder of intermetallide Pd₅Ba. The method for producing the noted cathode involves the preparation of a powder of intermetallide Pd₅Ba by melting the intermetallide Pd₅Ba, its grinding in an atmosphere of inert gases or CO₂. A palladium ribbon is covered with the palladium ribbon made with equiparticular holes spaced at equal distances, Pd₅Ba intermetallide powder is poured into the holes of the palladium ribbon, palladium ribbon, the same as the lower one, with the through holes is placed on top of the palladium ribbon, the resulting three-layer structure is pressed under pressure 10-12 t/cm², after which it is annealed for 1-2 hours in an inert atmosphere at a temperature of 800-900 °C and hot rolling is carried out to a given thickness.

EFFECT: increase in the coefficient of secondary electron emission.

2 cl, 2 dwg, 2 tbl, 2 ex