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    • 7. 发明授权
    • Process for producing cathode for cathode ray tube of directly heating
type
    • 直接加热式阴极射线管阴极生产工艺
    • US4114243A
    • 1978-09-19
    • US775618
    • 1977-03-08
    • Ko SoenoToshio DoiTomio IizukaHiroshi SakamotoHisashi AndoTetsuo OyamaAkira Misumi
    • Ko SoenoToshio DoiTomio IizukaHiroshi SakamotoHisashi AndoTetsuo OyamaAkira Misumi
    • H01J1/14H01J9/04
    • H01J9/04
    • In a process for producing a cathode for a cathode ray tube of directly heating type, which comprises shaping a heat-resistant and electro-conductive, flat metal plate, into a cathode substrate body having two leg pieces extended in the same direction and a flat part connected to one end of each leg piece, forming a heat-diffusible metal powder layer having a good affinity to said flat metal plate and on an outer surface of said flat part, heating the powder layer, thereby diffusion bonding the powder layer to the flat part and forming a bonding layer having an uneven surface, to which a thermionic emission layer is to be bonded, and forming the thermionic emission layer on the surface of the bonding layer, the process is characterized by forming on said flat metal plate a metal layer having a good affinity to the flat metal plate, by diffusion bonding, thereby forming a compound plate, and shaping the resulting compound plate into the shape of said cathode substrate body. A cathode having less thermal deformation and a longer life can be produced thereby.Furthermore, the process is characterized by applying a plastic working to the compound plate to a desired thickness and shaping the resulting compound plate into the shape of the cathode substrate body, and a cathode having much less thermal deformation and much longer life can be produced thereby.
    • 在直接加热型阴极射线管用阴极的制造方法中,包括将耐热导电平板状金属板成形为具有沿相同方向延伸的两个支腿的阴极基板主体, 形成与所述平板状金属板和所述平坦部的外表面具有良好亲和性的热扩散性金属粉末层,加热所述粉末层,从而将所述粉末层扩散到 并且形成具有不平坦表面的接合层,热电子发射层将被结合到其上,并且在接合层的表面上形成热离子发射层,其特征在于在所述平坦金属板上形成金属 通过扩散接合对平板状金属板具有良好的亲和性,从而形成复合板,并将得到的化合物板成形为所述阴极基体的形状。 因此可以产生具有较少热变形和较长寿命的阴极。