US4133679A
Expired / Lapsed
US
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Iron-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 iron 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 25 to 40 atom percent molybdenum and about 13 to 25 atom percent tungsten and the balance essentially iron plus incidental impurities. The glassy alloys evidence hardness values of at least about 1300 Kg/mm 2 , ultimate tensile strengths of at least about 420 Kpsi and crystallization temperatures of at least about 600° C.
Inventors
- 👤 Ranjan Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:54
CPC Classifications
C; C22; C22C; C22C45/00; C22C45/008; C22C45/02; C22C45/04
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 25 to 40 atom percent molybdenum and about 13 to 25 atom percent tungsten and the balance essentially iron 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 25 to 40 atom percent molybdenum and about 13 to 25 atom percent tungsten and the balance essentially iron 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 25 to 40 atom percent molybdenum and the balance essentially iron 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 30 to 40 atom percent molybdenum and the balance essentially iron plus incidental impurities.
Claim 5
Dependent Claim
29 words
The glassy alloy of claim 3 having a composition selected from the group consisting of Fe 60 Mo 30 B 10 and Fe 55 Mo 35 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 13 to 25 atom percent tungsten and the balance essentially iron 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 13 to 20 atom percent tungsten and the balance essentially iron plus incidental impurities.
Claim 8
Dependent Claim
29 words
The glassy alloy of claim 6 having a composition selected from the group consisting of Fe 77 W 15 B 8 and Fe 77 W 13 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 |