Method for protecting articles from hydrogen absorption by application of an alumina coating
US5252362A · kind A · utility
1Cited by
9References
17Claims
0Family size
Inventors
Key dates
| Filing date | Jul 19, 1991 |
| Grant date | Oct 12, 1993 |
| Priority date | — |
| Expiry date | Jul 19, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C26/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method is taught for protecting the surface of a metal subject to hydrogen embrittlement from hydrogen absorption. An adherent coating is formed on the surface of the metal substrate by heating the substrate, applying thereto a colloidal alumina suspension in a vaporizable carrier, and further heating said substrate and applied alumina suspension at an elevated temperature to form a protective alumina coating. Dopants may be employed to increase the inhibition of hydrogen diffusion through the alumina coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.