Heat treatment of metals in a controlled surface atmosphere
US3950575A · kind A · utility
9Cited by
1References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 1974 |
| Grant date | Apr 13, 1976 |
| Priority date | — |
| Expiry date | Jan 18, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C28/345
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process of treating metals with coatings capable, upon heating, of providing and maintaining a controlled atmosphere around the surfaces of said metals which process comprises coating the surfaces of said metals with base coating composition capable, upon heating, of providing a gas, and then with an over-coating composition capable of maintaining the gas around the surfaces of the metals at high temperatures while excluding an environmental oxidizing atmosphere therefrom, and thereafter heating the coated metals in the oxidizing atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.