Bodies including passivated metal particles
US3964939A · kind A · utility
7Cited by
11References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 26, 1974 |
| Grant date | Jun 22, 1976 |
| Priority date | — |
| Expiry date | Dec 26, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F11/162
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Long term protection against oxidation is provided to fine particles of oxidizable metals and metallic alloys by treating the essentially oxide-free particles with a solution of certain organic materials in a nonreactive organic solvent. These organic materials are ureas, thioureas, isocyanates or isothiocyanates with at least one organic substituent each containing at least two carbons. Particles of both hard and soft magnetic metals and alloys have been protected by this treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.