Oxidation resistant alloys, method for producing oxidation resistant alloys
US6475310B1 · kind B1 · utility
6Cited by
5References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 10, 2000 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Oct 10, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C8/80
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for producing oxidation-resistant austenitic alloys for use at temperatures below 800° C. comprising of: providing an alloy comprising, by weight %: 14-18% chromium, 15-18% nickel, 1-3% manganese, 1-2% molybdenum, 2-4% silicon, 0% aluminum and the balance being iron; heating the alloy to 800° C. for between 175-250 hours prior to use in order to form a continuous silicon oxide film and another oxide film. The method provides a means of producing stainless steels with superior oxidation resistance at temperatures above 700° C. at a low cost
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.