发明授权
- 专利标题: Method for fabricating an impregnated type cathode
- 专利标题(中): 用于制作印制型阴茎的方法
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申请号: US679170申请日: 1991-03-26
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公开(公告)号: US5096450A公开(公告)日: 1992-03-17
- 发明人: Toshikazu Sugimura , Yoshio Takeshima , Hidefumi Yamamoto , Masaaki Yabuta , Masami Horiuchi
- 申请人: Toshikazu Sugimura , Yoshio Takeshima , Hidefumi Yamamoto , Masaaki Yabuta , Masami Horiuchi
- 申请人地址: JPX Shiga
- 专利权人: NEC Kansai, Ltd.
- 当前专利权人: NEC Kansai, Ltd.
- 当前专利权人地址: JPX Shiga
- 优先权: JPX1-189131 19890721
- 主分类号: H01J9/04
- IPC分类号: H01J9/04
摘要:
A method for fabricating an impregnated type cathode comprises the steps of mixing metal powder having a high melting point and a heat proof property, and electron emission substance powder in a dry state, pressing the mixed powder to provide a pressed mixture, and applying an isostatic pressure to the pressed mixture contained in a sealed capsule. At the mixing stage, the metal powder is heated by a high temperature lower than the melting point, and at the mixing stage, a sintered mixture is obtained. In this method, the steps are simplified and decreased in number to decrease a fabricating cost. Furthermore, no influence occurs in electron emission due to hydrooxides.
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