High strength alloy tailored for high temperature mixed-oxidant environments
US6287398A · kind A · utility
3Cited by
5References
10Claims
0Family size
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Key dates
| Filing date | Dec 9, 1998 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Dec 9, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C19/058
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A high strength nickel-base alloy consisting essentially of, by weight percent, 50 to 60 nickel, 19 to 23 chromium, 18 to 22 iron, 3 to 4.4 aluminum, 0 to 0.4 titanium, 0.05 to 0.5 carbon, 0 to 0.1 cerium, 0 to 0.3 yttrium, 0.002 to 0.4 total cerium plus yttrium, 0.0005 to 0.4 zirconium, 0 to 2 niobium, 0 to 2 manganese, 0 to 1.5 silicon, 0 to 0.1 nitrogen, 0 to 0.5 calcium and magnesium, 0 to 0.1 boron and incidental impurities. The alloy forms 1 to 5 mole percent Cr.sub.7 C.sub.3 after 24 hours at a temperature between 950 and 1150.degree. C. for high temperature strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.