发明授权
US4427916A Heating element for indirectly heated cathode and method for the
manufacture of such an element
失效
用于间接加热阴极的加热元件和用于制造这种元件的方法
- 专利标题： Heating element for indirectly heated cathode and method for the manufacture of such an element
- 专利标题（中）： 用于间接加热阴极的加热元件和用于制造这种元件的方法
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申请号： US232571申请日： 1980-02-09
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公开(公告)号： US4427916A公开(公告)日： 1984-01-24
- 发明人: Arvind Shroff
- 申请人： Arvind Shroff
- 申请人地址： FRX Paris
- 专利权人： Thomson-CSF
- 当前专利权人： Thomson-CSF
- 当前专利权人地址： FRX Paris
- 优先权： FRX8003410 19800215
- 主分类号： H01J1/24
- IPC分类号： H01J1/24 ; H01J1/14 ; H01J17/06 ; H01K1/04
摘要：
This heating element is constituted by a filament and a mixture, fritted at between 1700.degree. and 1800.degree. C., of alumina and less than 10% by weight of yttrium oxide. This mixture fills the space left free by the filament within the cylinder closed by an emissive disk forming the cathode.
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