Cast refractory alloy
Abstract
Abstract CAST REFRACTORY ALLOYS OF AT LEAST ONE METAL SELECTED FROM THE GROUP OF TUNGSTEN, MOLYBDENUM, CHROMIUM, AND RHENIUM, AT LEAST ONE METAL SELECTED FROM THE GROUP TITANIUM, HAFNIUM AND TANTALUM, AND CARBON, THE W, MO, CR, OR RE BEING PRESENT IN AMOUNTS OF FROM ABOUT 5 TO ABOUT 85 ATOMIC PERCENT, THE TI, HF, AND TA BEING PRESENT IN AMOUNTS OF FROM ABOUT 5 TO ABOUT 85 ATOMIC PERCENT AND THE CARBON BEING PRESENT IN AMOUNTS OF FROM ABOUT 10 TO ABOUT 50.0 ATOMIC PERCENT HAVE BEEN FOUND TO FORM EUTECTIC STRUCTURES THAT PROVIDE SURPRISINGLY HIGH STRENGTH PROPERTIES AT ELEVATED TEMPERATURES. ALLOY CONSISTING ESSENTIALLY OF AT LEAST ONE METAL SELECTED FROM THE GROUP TUNGSTEN, CHROMIUM AND RHENIUM, ZIRCONIUM AND CARBON WITHIN CORRESPONDING RANGES ALSO HAVE BEEN FOUND TO HAVE UNEXPECTED HIGH TEMPERATURE STRENGTH PROPERTIES.
Inventors
- 👤 Ellis L Foster
- 👤 David E Price
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |