DocumentCode
2924443
Title
Development and characterization of the porous tungsten matrix obtaining process for dispenser thermionic cathode
Author
Sene, Frank F. ; Silva, Artur G L ; Motta, Cláudio C.
Author_Institution
Nucl. & Energy Res. Inst., Sao Paulo, Brazil
fYear
2012
fDate
24-26 April 2012
Firstpage
183
Lastpage
184
Abstract
W-Cu composites were used as starter materials of the thermionic cathode matrices for microwave tubes. However the decopperization affects their microstructure. An apparatus and an experimental procedure were developed to reduce the damages introduced during the decopperization. The matrix porosity (34.6%) was analyzed by SEM and its composition was determined by EDX.
Keywords
X-ray chemical analysis; composite materials; copper; microwave tubes; porous materials; scanning electron microscopy; thermionic cathodes; tungsten; EDX; SEM analysis; W-Cu; composite material; decopperization; dispenser thermionic cathode; matrix porosity; microstructure; microwave tube; porous tungsten matrix; Cathodes; Chemicals; Electromagnetic heating; Microstructure; Powders; Tungsten; Induction heating; decopperization; microstructure; porosity; thermionic cathode technology;
fLanguage
English
Publisher
ieee
Conference_Titel
Vacuum Electron Sources Conference (IVESC), 2012 IEEE Ninth International
Conference_Location
Monterey, CA
Print_ISBN
978-1-4673-0368-2
Type
conf
DOI
10.1109/IVESC.2012.6264175
Filename
6264175
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