Electric lamp and discharge devices – Electrode and shield structures – Cathodes containing and/or coated with electron emissive...
Patent
1982-01-20
1984-11-13
Sikes, William L.
Electric lamp and discharge devices
Electrode and shield structures
Cathodes containing and/or coated with electron emissive...
313336, 445 51, H01J 114, H01J 1906, H01K 104
Patent
active
044828390
ABSTRACT:
A thermionic emission cathode comprises a cathode tip made of an alkaline earth metal or rare earth metal hexaboride, a metallic support for supporting a base of said cathode tip and a reaction barrier layer comprising colloidal carbon and a reaction barrier material which bonds said cathode tip and said metallic support in one body.
REFERENCES:
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patent: 3823337 (1974-05-01), Johannes et al.
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patent: 4055780 (1977-10-01), Kawai et al.
patent: 4137476 (1979-01-01), Ishii
patent: 4168565 (1979-09-01), Ishii et al.
Hagiwara Hirotoshi
Ishii Masaji
Miyai Akira
Wada Tetsuya
Denki Kagaku Kogyo Kabushiki Kaisha
Sikes William L.
Wise Robert E.
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