DocumentCode :
2005587
Title :
A study of pressed Scandate dispenser cathode
Author :
Wang, Jinshu ; Liu, Wei ; Wang, Yiman ; Li, Lili ; Zhou, Meiling
Author_Institution :
Sch. of Mater. Sci. & Eng., Beijing Univ. of Technol., Beijing
fYear :
2008
fDate :
22-24 April 2008
Firstpage :
70
Lastpage :
71
Abstract :
A new kind of pressed scandate dispenser cathode was fabricated by liquid-liquid doping using a Sol-Gel technique. The cathode exhibits high emission property. i.e., the emission current density reached 47 A/cm2 at 850degCb with lower Richardson work function about 1.1-1.2 eV and Ba:Sc:O concentration ratio at the cathode surface was 1.6:1:2.0.
Keywords :
aluminium compounds; barium compounds; calcium compounds; cathodes; current density; doping; scandium compounds; sol-gel processing; tungsten compounds; work function; BaO-CaO-Al2O3; Richardson work function; Sc2O3-WO; emission current density; liquid-liquid doping; pressed scandate dispenser cathode; sol-gel process; temperature 850 degC; Cathodes; Current density; Diodes; Doping; Materials science and technology; Microstructure; Pollution measurement; Powders; Temperature; Tungsten; Emission; Pressed cathode; Scandate;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vacuum Electronics Conference, 2008. IVEC 2008. IEEE International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4244-1715-5
Type :
conf
DOI :
10.1109/IVELEC.2008.4556420
Filename :
4556420
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=2005587
بازگشت