Oxide cathode employing Ba evaporation restraining layer
US5548184A · kind A · utility
6Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1995 |
| Grant date | Aug 20, 1996 |
| Priority date | — |
| Expiry date | Aug 7, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J1/144
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An oxide cathode is provided including a metal base, an electron emissive material layer formed on the metal base and having barium as a main component, a heater for heating the electron emissive material layer, and a Ba evaporation restraining layer having a thickness ranging from 10.ANG. to 10,000.ANG. and consisting of at least one titanium compound formed on the electron emissive material layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.