Title:
METAL ELECTRODE, AND, ELECTRON GUN, ELECTRON TUBE, AND X-RAY TUBE USING SAME
Document Type and Number:
WIPO Patent Application WO/2015/114917
Kind Code:
A1
Abstract:
A metal provided with a passive film (33a) of 10 nm or greater in thickness is used as a metal electrode (focusing cup electrode) (33) for generating an electric field in vacuum. The passive film (33a) can be formed to be thicker than 10 nm by forming the metal electrode (33) from stainless steel, and immersing this stainless steel into a treatment solution to perform film treatment (passivation treatment). In this way, the passive film (33a) is thicker than 10 nm, has a uniform surface, excellent adhesion and no pinhole, and thus allows the voltage-resistance performance to be improved.
Inventors:
UKITA MASAAKI (JP)
IZUMI TAKURO (JP)
KOGA YUSUKE (JP)
IZUMI TAKURO (JP)
KOGA YUSUKE (JP)
Application Number:
PCT/JP2014/080685
Publication Date:
August 06, 2015
Filing Date:
November 19, 2014
Export Citation:
Assignee:
SHIMADZU CORP (JP)
International Classes:
H01J1/46; H01J35/04; H01J35/14
Foreign References:
| JPS6234754U | 1987-02-28 | |||
| JPH07197242A | 1995-08-01 | |||
| JPH05144394A | 1993-06-11 | |||
| JP2012164427A | 2012-08-30 |
Attorney, Agent or Firm:
SUGITANI Tsutomu (JP)
Tsutomu Sugitani (JP)
Tsutomu Sugitani (JP)
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