公开(公告)号：US4976644A

公开(公告)日：1990-12-11

申请号：US431246

申请日：1989-11-03

Applicant: Jong-in Jung

Inventor： Jong-in Jung

IPC: H01J1/28 ,  H01J9/04 ,  H01J29/04

CPC classification number: H01J1/28 ,  H01J9/04 ,  H01J9/042

Abstract: A manufacturing method for a dispenser cathode for the electron gun, said cathode comprising a container, an electron emissive material in the container, a porous metal body covering the emissive material, and a sleeve supporting the container. The method includes gas plasma sputtering process to form a porous metal body over the surface of the electron emissive material in the container. The method also may include forming a skirt along the upper edge of the container to strengthen the adherence of the porous metal body to the skirt and to achieve tight sealing of the skirt and porous metal body. The method also can prevent damage of the porous metal body, and can increase the beam currents.

Abstract translation: 一种用于电子枪的分配器阴极的制造方法，所述阴极包括容器，容器中的电子发射材料，覆盖发射材料的多孔金属体以及支撑容器的套筒。 该方法包括气体等离子体溅射工艺，以在容器中的电子发射材料的表面上形成多孔金属体。 该方法还可以包括沿着容器的上边缘形成裙部，以加强多孔金属体与裙部的粘附，并实现裙部和多孔金属体的紧密密封。 该方法还可以防止多孔金属体的损坏，并且可以增加束流。