Title :
New technology of impregnated cathode
Author :
Kornyukhin, A.A. ; Luchin, A.A. ; Maslennikov, O.U.
Author_Institution :
SSPE, Obruchev, Russia
Abstract :
In this paper structures of experimental cathodes, made by means of new technology are presented. The presented W-matrix technology allows to deposit porous tungsten layer practically on any configuration substrate using special paste. The main aspect in this technology is atomically active agent formation during thermal treatment, which bands together tungsten particles. It is generated during dissociation of the paste components. Results of research of thermionic characteristics are also considered in this paper. From experiments work function of new cathodes is lower than that of Levi´s cathode as much as 0.2%0.3 eV.
Keywords :
annealing; dissociation; metallic thin films; porous materials; thermionic cathodes; tungsten; work function; Levi cathode; W; W matrix technology; impregnated cathode; porous tungsten layer deposition; thermal treatment; thermionic properties; tungsten particles; work function; Cathodes; Hydrogen; Isolation technology; Isolators; Lead; Paper technology; Powders; Sandblasting; Shape; Tungsten;
Conference_Titel :
Vacuum Electronics, 2003 4th IEEE International Conference on
Print_ISBN :
0-7803-7699-4
DOI :
10.1109/IVEC.2003.1286403
