发明授权
- 专利标题： Electron tube cathode and method for producing the same
- 专利标题（中）： 电子管阴极及其制造方法
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申请号： US946194申请日： 1978-09-27
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公开(公告)号： US4260665A公开(公告)日： 1981-04-07
- 发明人: Toshiyuki Aida , Sadanori Taguchi , Isamu Yuito , Ushio Kawabe , Shigehiko Yamamoto , Yukio Honda , Norio Shibata , Hiroshi Okano
- 申请人： Toshiyuki Aida , Sadanori Taguchi , Isamu Yuito , Ushio Kawabe , Shigehiko Yamamoto , Yukio Honda , Norio Shibata , Hiroshi Okano
- 申请人地址： JPX Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX52-116842 19770930
- 主分类号： H01J1/26
- IPC分类号： H01J1/26 ; H01J1/14 ; H01J1/15 ; H01J9/04
摘要：
An electron tube cathode in such a structure comprising a Ni-W-Zr alloy (W content: 20-28 wt. %) having a grain size of 4-10 .mu.m as a base metal, a 1,000-2,000 A-thick Pt film provided on the surface of the base metal, and an electron emitting material layer consisting of alkaline earth metal oxide provided on the Pt film has less emission lowering and less peeling of the electron emitting material layer, even if placed in a long time service. The electron tube cathode can be produced according to a method comprising (i) a step of annealing a base metal of Ni-W-Zr alloy (W content: 20-28 wt. %) at 1,000.degree.-1,200.degree. C., (ii) a step of providing a 1,000-2,000 A thick Pt film on the surface of the base metal, and (iii) a step of providing an electron emitting material layer consisting of alkaline earth metal oxide on the Pt film.
公开/授权文献
- US5938470A Half-fitting prevention connector 公开/授权日：1999-08-17
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