公开(公告)号：US3823337A

公开(公告)日：1974-07-09

申请号：US36387773

申请日：1973-05-25

Applicant: PHILIPS CORP

Inventor： MITRA N ,  VAN STRATUM A ,  ZALM P

IPC: H01J1/14 ,  H01J1/148 ,  H01J1/15 ,  H01J19/06

CPC classification number: H01J1/15 ,  H01J1/148

Abstract: A cathode suitable for poor vacuum conditions and repeated exposures to air consists of a molybdenum support, compact or compressed powder, welded on a tungsten wire and having thereon a compressed mixture of rhenium with lanthanum hexaboride. Instead of rhenium, a tungsten boride such as W2B or W2B5 may be chosen.

公开(公告)号：US3811002A

公开(公告)日：1974-05-14

申请号：US28008272

申请日：1972-08-14

Applicant: PHILIPS CORP

Inventor： GARBE S ,  ZALM P ,  PASTOOR W

IPC: H01J40/06 ,  H01J9/02 ,  H01J9/12 ,  H01J9/22

CPC classification number: H01J9/12 ,  H01J2201/32 ,  H01J2201/34

Abstract: A method of manufacturing an electric discharge tube having an electron-emitting electrode comprising a support with a cesiumcontaining layer thereon which is activated by reaction of a gaseous compound of an inactive or inert gas and fluorine until a cesium fluoride layer having a composition (CsF, Cs) is formed. The gaseous compound, at the temperatures prevailing in the tube does not react with the surfaces of other parts.

Abstract translation: 一种制造具有电子发射电极的放电管的方法，该电子发射电极包括其上含有铯的层的载体，其通过惰性或惰性气体和氟的气态化合物的反应而活化，直到具有组成的氟化铯（ CsF，Cs）。 气体化合物在管中的温度下不与其它部分的表面反应。