发明公开
EP0248470A1 Method of manufacturing a dispenser cathode
失效
Herstellungsverfahren einer Vorratskathode。
- 专利标题: Method of manufacturing a dispenser cathode
- 专利标题(中): Herstellungsverfahren einer Vorratskathode。
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申请号: EP87200951.9申请日: 1987-05-20
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公开(公告)号: EP0248470A1公开(公告)日: 1987-12-09
- 发明人: Van Esdonk, Johannes , Hasker, Jan , Swemmers, Antonius Hendrikus Maria
- 申请人: Philips Electronics N.V.
- 申请人地址: Groenewoudseweg 1 5621 BA Eindhoven NL
- 专利权人: Philips Electronics N.V.
- 当前专利权人: Philips Electronics N.V.
- 当前专利权人地址: Groenewoudseweg 1 5621 BA Eindhoven NL
- 代理机构: Raap, Adriaan Yde
- 优先权: NL8601374 19860529
- 主分类号: H01J9/04
- IPC分类号: H01J9/04 ; H01J1/28
摘要:
The invention relates to the manufacture of a dispenser cathode having a porous tungsten body incorporating scandium oxide in at least a layer adjacent the surface area intended for electron emission. It was surprisingly found that a scandium oxide-containing tungsten body can be mechanically processed satisfactorily if it incorporates copper prior to the processing operation.
公开/授权文献
- EP0248470B1 Method of manufacturing a dispenser cathode 公开/授权日:1990-03-28
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