Co-sputtered thermionic cathodes and fabrication thereof
US4675091A · kind A · utility
3Cited by
11References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1986 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Apr 16, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/042
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A thermionic cathode fabricated by cosputtering alkaline earth oxide and al powders under temperature and pressure conditions that ensure a metal particle size in a preferred range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.