METHOD FOR FABRICATING THERMIONIC CATHODE MATERIAL

WIPO Patent Application WO/2017/213282

A1

Proposed is a method for fabricating a thermionic cathode material and, more specifically, an invention relating to a method for fabricating a thermionic cathode material by utilizing an injection molding process that allows for conferring a homogeneous microstructure and a near-net shape control, whereby the thermionic cathode material can be improved in thermionic emission characteristics and can be easily fabricated. The method for fabricating a thermionic cathode material according to the present invention comprises the steps of: mixing a raw material with a binder to prepare a mixture; injection molding the mixture by use of a near-net shape mold; removing the binder from a molded body injected through the injection molding; sintering the binder-removed, molded body; impregnating the sintered body, that is, the sintered, molded body with a thermion activator; and machining the impregnated body, that is, the impregnated, sintered body, to form a thermionic emission surface thereon.

LEE SEONG (KR)
SHIN JIN-WOO (KR)
HONG YONG-JUN (KR)
SO JOON-HO (KR)
LEE SUNG-HO (KR)

PCT/KR2016/006365

December 14, 2017

June 15, 2016

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AGENCY DEFENSE DEV (KR)

H01J9/04; H01J1/148

KR20100002935A	2010-01-07
KR19980023673A	1998-07-06
JP2004063177A	2004-02-26
KR20060056884A	2006-05-25
JPH08129965A	1996-05-21

HONG, YOUNG JUN: "Development of the impregnated dispenser cathode for thermionic emission electron gun", THESIS, 18 February 2016 (2016-02-18), pages 182

HANYANG PATENT FIRM (KR)

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