US4133682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cobalt-refractory metal-boron glassy alloys
Assignee: Honeywell International Inc
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Filing: 1978-01-03
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Granted: 1979-01-09
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Expires: 1998-01-03
Abstract
Abstract Glassy alloys containing cobalt and molybdenum or tungsten, together with low boron content, are disclosed. The glassy alloys of the invention consist essentially of about 5 to 12 atom percent boron, a member selected from the group consisting of about 20 to 50 atom percent molybdenum and about 15 to 40 atom percent tungsten and the balance essentially cobalt plus incidental impurities. The glassy alloys evidence hardness values of at least about 1130 Kg/mm2, ultimate tensile strengths of at least about 400 Kpsi and crystallization temperatures of at least about 570 DEG C.
Inventors
- 👤 Ranjan Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:59
CPC Classifications
C; C22; C22C; C22C45/00; C22C45/04; C22C45/008
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
46 words
A substantially totally glassy alloy consisting essentially of about 5 to 12 atom percent boron, a member selected from the group consisting of about 20 to 50 atom percent molybdenum and about 15 to 40 atom percent tungsten and the balance essentially cobalt plus incidental impurities.
Claim 2
Dependent Claim
46 words
A substantially totally glassy alloy consisting essentially of about 5 to 12 atom percent boron, a member selected from the group consisting of about 20 to 50 atom percent molybdenum and about 15 to 40 atom percent tungsten and the balance essentially cobalt plus incidental impurities.
Claim 3
Dependent Claim
31 words
The glassy alloy of claim 1 consisting essentially of about 5 to 12 atom percent boron, about 20 to 50 atom percent molybdenum and the balance essentially cobalt plus incidental impurities.
Claim 4
Dependent Claim
31 words
The glassy alloy of claim 2 consisting essentially of about 8 to 10 atom percent boron, about 25 to 40 atom percent molybdenum and the balance essentially cobalt plus incidental impurities.
Claim 5
Dependent Claim
36 words
The glassy alloy of claim 3 having a composition selected from the group consisting of Co 66 Mo 26 B 8 , Co 55 Mo 35 B 10 and Co 50 Mo 40 B 10 .
Claim 6
Dependent Claim
31 words
The glassy alloy of claim 1 consisting essentially of about 5 to 12 atom percent boron, about 15 to 40 atom percent tungsten and the balance essentially cobalt plus incidental impurities.
Claim 7
Dependent Claim
31 words
The glassy alloy of claim 5 consisting essentially of about 8 to 10 atom percent boron, about 20 to 30 atom percent tungsten and the balance essentially cobalt plus incidental impurities.
Claim 8
Dependent Claim
29 words
The glassy alloy of claim 6 having a composition selected from the group consisting of Co 70 W 20 B 10 and Co 60 W 30 B 10 .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-08 | 1982-07-10 | 1983-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-08 | 1986-07-10 | 1987-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-08 | 1990-07-10 | 1991-01-09 | $7700.00 | Window Closed / Lapsed |