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    • 7. 发明授权
    • Directly heated oxide cathode
    • 直接加热氧化物阴极
    • US4081713A
    • 1978-03-28
    • US710303
    • 1976-07-30
    • Akira Misumi
    • Akira Misumi
    • H01J1/14H01J19/06H01K1/04
    • H01J1/14
    • A directly heated oxide cathode comprises a base metal of alloy containing Ni as a host material, an electron emissionable oxide of alkaline earth metal deposited on the base metal, and powders of metal selected from Ni sample substance, Co simple substance, Ni-Co alloy, alloy containing Ni, Ni-Co, or Co as a host material, and alloy containing Ni as a host material and a reducing agent such as Zr, deposited on both sides of the base metal onto which the oxide is deposited. Provision of the powders of metal on both sides can minimize deformation of the base metal and prevent peeling of the oxide from the cathode effectively. Provision of a reducing agent in the powders of metal further assures a sufficient supply of the reducing agent to the oxide, thereby effectively maintaining the electron emissionability and life of the oxide for a longer period of time.
    • 直接加热的氧化物阴极包括含有Ni作为主体材料的基体金属,沉积在母材上的碱土金属的电子发射氧化物,以及选自Ni样品物质,Co单质,Ni-Co合金的金属粉末 含有Ni,Ni-Co或Co作为主体材料的合金以及含有Ni作为主体材料的合金和沉积在其上沉积有氧化物的母材两侧的诸如Zr的还原剂。 在两侧设置金属粉末可以最小化贱金属的变形,并有效地防止氧化物从阴极剥离。 在金属粉末中提供还原剂进一步确保足够的还原剂供应到氧化物,从而有效地保持氧化物的电子发射性和寿命更长的时间。
    • 10. 发明授权
    • Directly heated cathode
    • 直接加热阴极
    • US4636681A
    • 1987-01-13
    • US219941
    • 1980-12-24
    • Akira Misumi
    • Akira Misumi
    • H01J1/14H01J19/06H01K1/04
    • H01J1/14
    • In a directly heated cathode including a base formed of an alloy containing nickel as its principal component and coated with an oxide of an alkaline earth metal which emits electrons, a layer of a metal selected from the group consisting of nickel, cobalt, platinum and rhodium or of an alloy containing one of these metals as its principal component is formed on both surfaces of the base to one of which surfaces the coating of the oxide is applied, so as to thereby prevent the peeling-off of the coating of the oxide from the base. In order to avoid deformation of the base, a powder alloy containing tungsten and nickel as its principal components, a powder alloy containing molybdenum and nickel as its principal components or one of these powder alloys which is coated with nickel, cobalt or a cobalt-nickel alloy is deposited on the surface of the base to which the coating of the oxide is applied.
    • 在由包含镍作为其主要成分并且涂覆有发射电子的碱土金属的氧化物的合金形成的基底的直接加热的阴极中,选自镍,钴,铂和铑的金属层 或者含有这些金属中的一种作为其主要成分的合金形成在基底的两个表面上,其中一个表面施加氧化物的涂层,从而防止氧化物涂层的剥离 的基地。 为了避免基体的变形,以钨和镍为主要成分的粉末合金,以钼和镍为主要成分的粉末合金或这些粉末合金之一,其中涂有镍,钴或钴镍 合金沉积在施加氧化物涂层的基底的表面上。