Process for controlling powder size with optical energy
US4289952A · kind A · utility
11Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1979 |
| Grant date | Sep 15, 1981 |
| Priority date | — |
| Expiry date | Dec 12, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/665
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Metal or ceramic powders having a narrow size distribution are produced by passing a gas entrained powder through an intense light beam which couples preferentially with the larger particles to heat and selectively vaporize a portion of the larger particles until their diameter approximates the desired size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.