US4210443A
Expired / Lapsed
US
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Iron group transition metal-refractory metal-boron glassy alloys
Assignee: Honeywell International Inc
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Filing: 1978-02-27
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Granted: 1980-07-01
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Expires: 1998-02-27
Abstract
Abstract Glassy alloys containing iron, cobalt and nickel plus molybdenum and/or tungsten, together with low boron content, are disclosed. The glassy alloys of the invention consist essentially of about 5 to 10 atom percent boron, about 5 to 15 atom percent molybdenum and/or tungsten and the balance essentially iron, cobalt and nickel plus incidental impurities. Each of the iron group metals must be present in an amount of at least about 5 atom percent. The glassy alloys evidence hardness values of at least about 1000 Kg/mm2, ultimate tensile strengths of at least about 350 Kpsi and crystallization temperatures of at least about 445 DEG C.
Inventors
- 👤 Ranjan Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:54
CPC Classifications
C; C22; C22C; C22C45/00; C22C45/04; C22C1/00; C22C1/11; C22C45/008; C22C45/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
52 words
A substantially totally glassy alloy consisting essentially of about 5 to 10 atom percent boron, about 5 to 15 atom percent of at least one of molybdenum and tungsten and the balance essentially iron, cobalt and nickel, each present in an amount of at least about 5 atom percent, plus incidental impurities.
Claim 2
Dependent Claim
52 words
A substantially totally glassy alloy consisting essentially of about 5 to 10 atom percent boron, about 5 to 15 atom percent of at least one of molybdenum and tungsten and the balance essentially iron, cobalt and nickel, each present in an amount of at least about 5 atom percent, plus incidental impurities.
Claim 3
Dependent Claim
31 words
The glassy alloy of claim 1 consisting essentially of about 5 to 10 atom percent boron, about 5 to 15 atom percent molybdenum and the balance essentially iron, cobalt and nickel.
Claim 4
Dependent Claim
31 words
The glassy alloy of claim 2 consisting essentially of about 5 to 10 atom percent boron, about 5 to 15 atom percent tungsten and the balance essentially iron, cobalt and nickel.
Claim 5
Dependent Claim
59 words
The glassy alloy of claim 1 consisting essentially of about 8 to 10 atom percent boron, about 8 to 12 atom percent of at least one of molybdenum and tungsten, about 50 to 65 atom percent of one of the iron group metals and about 13 to 35 atom percent of the remaining two of the iron group metals.
Claim 6
Dependent Claim
12 words
The glassy alloy of claim 1 wherein said alloy is totally glassy.
Claim 7
Dependent Claim
52 words
A substantially totally glassy alloy consisting essentially of about 5 to 13 atom percent boron, about 5 to 15 atom percent of at least one of molybdenum and tungsten and the balance essentially iron, cobalt and nickel, each present in an amount of at least about 5 atom percent, plus incidental impurities.
Claim 8
Dependent Claim
52 words
A substantially totally glassy alloy consisting essentially of about 5 to 13 atom percent boron, about 5 to 15 atom percent of at least one of molybdenum and tungsten and the balance essentially iron, cobalt and nickel, each present in an amount of at least about 5 atom percent, plus incidental impurities.
Claim 9
Dependent Claim
14 words
A glassy alloy as recited in claim 6 wherein said alloy is totally glassy.
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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) | 1983-07-01 | 1983-12-31 | 1984-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-01 | 1987-12-31 | 1988-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-01 | 1991-12-31 | 1992-07-01 | $7700.00 | Window Closed / Lapsed |