发明授权
- 专利标题: Tungsten electrode material and thermionic emission current measuring device
- 专利标题(中): 钨电极材料和热电子发射电流测量装置
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申请号: US13133338申请日: 2009-12-08
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公开(公告)号: US09502201B2公开(公告)日: 2016-11-22
- 发明人: Seiji Nakabayashi , Masahiro Katoh , Yoshiharu Yamamoto , Toshihiko Yoshida , Norihiko Hasegawa
- 申请人: Seiji Nakabayashi , Masahiro Katoh , Yoshiharu Yamamoto , Toshihiko Yoshida , Norihiko Hasegawa
- 申请人地址: JP Tokyo
- 专利权人: A.L.M.T. Corp.
- 当前专利权人: A.L.M.T. Corp.
- 当前专利权人地址: JP Tokyo
- 代理机构: Sughrue Mion, PLLC
- 优先权: JP2008-312158 20081208; JP2008-312355 20081208; JP2009-263771 20091119; JP2009-274346 20091202
- 国际申请: PCT/JP2009/070503 WO 20091208
- 国际公布: WO2010/067781 WO 20100617
- 主分类号: H01B1/08
- IPC分类号: H01B1/08 ; H01J1/146 ; H01J9/42 ; H01J61/073
摘要:
Provided is a tungsten electrode material that can improve the life of an electrode than conventional by the use of a material in place of thorium oxide. The tungsten electrode material includes a tungsten base alloy and oxide particles dispersed in the tungsten base alloy, wherein the oxide particle is an oxide solid solution in which a Zr oxide and/or a Hf oxide and an oxide of at least one or more kinds of rare earth elements selected from Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu are solid-dissolved.
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