Sintered wire cathode
Abstract
A porous cathode structure is fabricated from a plurality of wires which are placed in proximity to each other in elevated temperature and pressure for a sintering time. The sintering process produces the porous cathode structure which may be divided into a plurality of individual porous cathodes, one of which may be placed into a dispenser cathode support which includes a cavity for containing a work function reduction material such as BaO, CaO, and Al.sub.2O.sub.3. The work function reduction material migrates through the pores of the porous cathode from a work replenishment surface adjacent to the cavity of the dispenser cathode support to an emitting cathode surface, thereby providing a dispenser cathode which has a uniform work function and therefore a uniform electron emission.
- Inventors:
-
- San Jose, CA
- Saratoga, CA
- Issue Date:
- Research Org.:
- Calabazas Creek Research, Inc. (San Mateo, CA)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 988403
- Patent Number(s):
- 7545089
- Application Number:
- 11/085,425
- Assignee:
- Calabazas Creek Research, Inc. (San Mateo, CA)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- DOE Contract Number:
- FG02-04ER83918
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING
Citation Formats
Falce, Louis R, and Ives, R Lawrence. Sintered wire cathode. United States: N. p., 2009.
Web.
Falce, Louis R, & Ives, R Lawrence. Sintered wire cathode. United States.
Falce, Louis R, and Ives, R Lawrence. Tue .
"Sintered wire cathode". United States. https://www.osti.gov/servlets/purl/988403.
@article{osti_988403,
title = {Sintered wire cathode},
author = {Falce, Louis R and Ives, R Lawrence},
abstractNote = {A porous cathode structure is fabricated from a plurality of wires which are placed in proximity to each other in elevated temperature and pressure for a sintering time. The sintering process produces the porous cathode structure which may be divided into a plurality of individual porous cathodes, one of which may be placed into a dispenser cathode support which includes a cavity for containing a work function reduction material such as BaO, CaO, and Al.sub.2O.sub.3. The work function reduction material migrates through the pores of the porous cathode from a work replenishment surface adjacent to the cavity of the dispenser cathode support to an emitting cathode surface, thereby providing a dispenser cathode which has a uniform work function and therefore a uniform electron emission.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 09 00:00:00 EDT 2009},
month = {Tue Jun 09 00:00:00 EDT 2009}
}