Title :
Study on aluminate of cathode emission active substances
Author :
Li Zhishun ; Wang Yuchun
Author_Institution :
CEC Sanle Electron. Inf. Ind. Group Ltd., Nanjing, China
Abstract :
Microwave tubes are used at the field of radar, electron counterwork and communication widely. The cathode is the heart of the microwave tube. The impregnated aluminate Ba-W cathode is used most widely. Along with the development of microwave technology, the high performance cathode is necessary with big current density, long life. The performance of cathode is decided by aluminate of cathode emission active substances. Forming method and sintering process are very important to the emission performance of aluminate. This paper studies the emission performance of aluminate forming method and sintering process.
Keywords :
aluminium compounds; barium; cathodes; current density; field emission; forming processes; microwave tubes; radar; radiowave propagation; sintering; tungsten; BaW-AlO; aluminate forming method; cathode emission active substances; current density; electron counterwork; impregnated aluminate Ba-W cathode; long life cathode; microwave tubes; radar; radiowave communication; sintering;
Conference_Titel :
Vacuum Electron Sources Conference and Nanocarbon (IVESC), 2010 8th International
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-6645-0
DOI :
10.1109/IVESC.2010.5644210