Carbide alloy
Abstract
Abstract CARBIDE-METAL COMPOSITES OF SUPERIOR TOOL QUALITIES ARE PREPARED FROM SUBSTOICJHIOMETRIC CARBON-DEFICIENT MONOCARBIDE ALLOYS BASED ON TITANIUM, TUNGSTEN AND CARBON, AND BINDERS CONSISTING OF IRON METAL GROUP ALLOYS. THE IMPROVED TOOL QUALITIES ARE BASED IN PART ON THE DISCOVERY THAT SINGLE-PHASED MONOCARBIDE ALLOYS WITH SUBSTANTIALLY LARGER TUNGSTEN CONCENTRATIONS THAT IN THE COMMERCIALLY-USED, CARBON-SATURATED CARBIDES ARE POSSIBLE AT SUBSTOICHIOMETRIC COMPOSITIONS (5 TO 12 ATOMIC PERCENT CARBON DEFICIENCY). THE MICROSTRUCTURE IS CHARACTERIZED BY THE FINE MONOCARBIDE GRAINS EMBEDDED IN THE BINDER ALLOY MATRIX. A BENEFICIAL SMALL GRAIN SIZE IN SUBSTANTIALLY CARBON-DEFICIENT (8 TO 12 ATOMIC PERCENT) MONOCARBIDE ALLOYS IS OBTAINED BY IN SITU PRECIPITATION REACTIONS IN THE LARGER, PREMILLED CARBIDE GRAINS DURING FABRICATION.
Inventors
- 👤 E Rudy
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |