公开(公告)号：US3711908A

公开(公告)日：1973-01-23

申请号：US3711908D

申请日：1970-08-27

Applicant: IBM

Inventor： BROERS A

IPC: B23K15/00 ,  B23K26/00 ,  H01J9/02 ,  H01J9/16 ,  H01J9/44

CPC classification number: H01J9/025 ,  B23K15/0093 ,  B23K26/0006 ,  B23K26/0081 ,  B23K2201/32 ,  B23K2203/50

Abstract: There is disclosed a method for forming tips on normally sintered material electron-emitting cathodes. The method comprises melting the electron-emitting end of the cathode with an electron beam or other suitable narrow beam heating means, such as a laser, for example. This melting produces a dense fused mass at the end of the cathode. This fused mass can then be polished to a tip having a very small diameter such as substantially less than 5 microns.

Abstract translation: 公开了在正常烧结材料电子发射阴极上形成尖端的方法。 该方法包括用电子束或其它合适的窄束加热装置（例如激光）熔化阴极的电子发射端。 这种熔化在阴极的末端产生致密的熔融物质。 然后将该熔融物料抛光到具有非常小直径的尖端，例如基本上小于5微米。