Ferrous metal article having oxide coating formed from the base metal suitable for brake apparatus et al
US6635355B2 · kind B2 · utility
9Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2002 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | Dec 2, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C8/14
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Disclosed is a ferrous metal article having a protective, adherent, wear resistant coating of metallic oxides and a method of forming a protective, adherent, wear resistant coating of metallic oxides on an iron-chrome article. The coating desirably has a thickness of from about 12.7 to about 102 microns (½ mil to about 4 mils) and is formed by exposure of the article to an oxidizing atmosphere, preferably air, preferably during heat treatment of the article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.