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Title: 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:
 [1];  [2]
  1. San Jose, CA
  2. 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 = {2009},
month = {6}
}

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