Title :
Emission properties, microstructure and surface composition of scandate impregnated cathodes with tungsten and a tungsten-rhenium matrix
Author :
Makarov, A.P. ; Bersneva, E.U. ; Zemchikhin, E.M. ; Chistova, G.I.
Author_Institution :
JSC “RPC”Istok” named after Shokin, Fryazino, Russia
fDate :
June 30 2014-July 4 2014
Abstract :
The investigation of emissive ability, lifetime, structure and component surface composition of scandate cathodes with a matrix of tungsten and of tungsten-rhenium matrix impregnated with barium-calcium aluminate (4:1:1 or 6:1:2 moles) with 0.5-5 weight nonuniform emission can be explained by formation of crystals up to 100 nm in size consisting mainly of scandium oxide, barium oxide and calcium oxide.
Keywords :
barium compounds; calcium compounds; cathodes; crystal microstructure; electron field emission; rhenium compounds; surface composition; tungsten compounds; vacuum microelectronics; WReScO3-BaCaAlO4; WScO3-BaCaAlO4; barium oxide; barium-calcium aluminate; calcium oxide; component surface composition; crystal formation; microstructure; nonuniform emission; scandate impregnated cathodes; scandium oxide; tungsten-rhenium matrix; Barium; Calcium; Cathodes; Microscopy; Powders; Surface treatment; Tungsten;
Conference_Titel :
Vacuum Electron Sources Conference (IVESC), 2014 Tenth International
Conference_Location :
St. Petersburg
Print_ISBN :
978-1-4799-5770-5
DOI :
10.1109/IVESC.2014.6892027
