Nickel base bonding powder
Abstract
Abstract A NICKEL BASE, BORON INCLUDING BONDING POWDER FOR USE IN BONDING ALLOY MEMBERS IS PROVIDED WITH IMPROVED TOUGHNESS AND DUCTILITY THROUGH THE ELIMINATION OF THE BORIDE FORMER AND PRECIPITATION STRENGTHENER TITANIUM AND THE BORIDE FORMERS AND SOLUTION STRENGTHENERS MOLYBDENUM AND TUNGSTEN, WHICH FOR SOME APPLICATIONS HAVE BEEN INCLUDED IN AGE HARDENABLE BONDING POWDERS. FURTHER MELTING POINT REDUCTION CAN BE OBTAINED THROUGH THE ADDITION OF ELEMENTS SELECTED FROM TANTALUUM AND HAFNIUM IN THE SUM OF 2-4 WEIGHT PERCENT, A UNIQUE JOINT PRODUCED IN AN ARTICLE BETWEEN ALLOY MEMBERS USING SUCH BONDING POWDER IS CHARACTERIZED BY A RECRYSTALLIZED, NONPLANAR MICROSTRUCTURE INCLUDING PREDOMINANTLY DISCRETE, DISPERSED BORIDES RATHER THAN A CONTINUOUS PLANAR BORIDE PHASE.
Inventors
- 👤 J Zelahy
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |