Method and apparatus for making submicrom powders
US4762975A · kind A · utility
53Cited by
23References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1987 |
| Grant date | Aug 9, 1988 |
| Priority date | — |
| Expiry date | Nov 12, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J27/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process for producing ultrafine particles includes the steps of providing a consumable electrode having a rod or wire configuration, melting the tip of the electrode by means of electron bombardment, and applying an intense electric field to the molten tip to generate a beam of charged droplets. By heating the tip of the rod but avoiding melting of the tip and subsequently applying an electric field to the heated tip, an ion beam may be generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.