Compositions comprising nickel-titanium, methods of manufacture thereof and articles comprising the same
US8377373B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 20, 2009 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Sep 17, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D9/38
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosing herein is a method for manufacturing nickel-titanium compositions. The method includes disposing a powdered composition in a mold; the powdered composition comprising nickel and titanium; the titanium being present in an amount of about 38 to about 42 wt % and the nickel being present in an amount of about 58 to about 62 wt %; sintering the powdered composition to produce a sintered preform; compacting the preform; machining the preform to form an article; heat treating the article; the annealing being conducted at a temperature of about 1650° F. to about 1900° F. at a pressure of about 3 Torr to about 5 Kg-f/cm2 for a time period of about 10 minutes to about 5 hours; and quenching the article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.