Thermionic emission cathode and preparation thereof
US4482839A · kind A · utility
11Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 20, 1982 |
| Grant date | Nov 13, 1984 |
| Priority date | — |
| Expiry date | Jan 20, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J1/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.