SCANDATE DISPENSER CATHODE
    4.
    发明申请

    公开(公告)号:US20090273269A1

    公开(公告)日:2009-11-05

    申请号:US11722100

    申请日:2005-12-13

    IPC分类号: H01J1/28

    CPC分类号: H01J1/28

    摘要: A scandate dispenser cathode having a cathode body (4) arranged on a cathode support (3), a cathode coating (5, 6) comprising a layer system (6) consisting of one or more alternating layers of rhenium or a rhenium alloy (61) and of scandium oxide or a scandium alloy (62), and an activation acceleration layer system (5) arranged between the cathode body (4) and the layer system (6), said activation acceleration layer system comprising at least one release layer (52) comprising alkaline earth metal oxide, preferably barium oxide, and an activator layer system (51) comprising a barrier material with greater oxidation resistance than the material of the cathode body and an activator material for reducing the alkaline earth metal oxide, preferably barium oxide.

    摘要翻译: 具有设置在阴极支撑体(3)上的阴极体(4)的钪酸盐分配器阴极,包括由一个或多个交替层的铼或铼合金(61)组成的层系统(6)的阴极涂层(5,6) )和氧化钪或钪合金(62),以及设置在阴极体(4)和层系(6)之间的激活加速层系统(5),所述激活加速层系统包括至少一个释放层 52),包括碱土金属氧化物,优选氧化钡,以及包含比阴极体的材料具有更高抗氧化性的阻挡材料的活化剂层体系(51)和用于还原碱土金属氧化物的活化剂材料,优选氧化钡 。