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公开(公告)号：US3590242A
公开(公告)日：1971-06-29
申请号：US3590242D
申请日：1969-06-12
Applicant: GEN ELECTRIC
Inventor： GLASCOCK HOMER H JR
CPC classification number: H01J9/04 , Y10T428/1266 , Y10T428/12771
Abstract: The surface energy of a liquid phase of thorium compounds or alloys is used in fabricating cathodes by immersing the lower end of an inclined refractory metal tube into a powder mixture of elemental thorium and tungsten carbide, heating to a temperature above the melting point of the mixture so that the liquid mixture flows up the inside of the tube by capillary attraction, cooling and cutting the tube into sections of length for cathode bodies. A convex hemispherical emissive surface for the thermionic cathode is formed by electron beam melting the end of the thin rod of a thorium compound or alloy.
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2.发明授权Electron discharge device subject to hydrocarbon background pressure and having carbon-dissolving electrodes 失效具有碳氢化合物的电子放电装置背景压力和碳溶解电极
公开(公告)号：US3526799A
公开(公告)日：1970-09-01
申请号：US3526799D
申请日：1967-05-26
Applicant: GEN ELECTRIC
Inventor： COPPOLA PATRICK P , GLASCOCK HOMER H JR
CPC classification number: H01J31/24 , H01J19/30 , H01J29/48 , H01J2893/002
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