Patent US4264358A successfully refreshed from Google Patents.
US4264358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconducting glasses with flux pinning inclusions
Assignee: California Institute of Technology
•
Filing: 1979-02-12
•
Granted: 1981-04-28
•
Expires: 1999-02-12
Abstract
Abstract A series of amorphous superconducting glassy alloys containing 1% to 10% by volume of flux pinning crystalline inclusions have been found to have potentially useful properties as high field superconducting magnet materials. The alloys are prepared by splat cooling by the piston and anvil technique. The alloys have the composition (TM)90-70 (M)10-30 where TM is a transition metal selected from at least one metal of Groups IVB, VB, VIB, VIIB or VIIIB of the Periodic Table such as Nb, Mo, Ru, Zr, Ta, W or Re and M is at least one metalloid such as B, P, C, N, Si, Ge or Al.
Inventors
- 👤 William L. Johnson
- 👤 Siu-Joe Poon
- 👤 Pol E. Duwez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:35
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/80; H10N60/85; C; C22; C22F; C22F1/00; C22F1/16; C22F1/18; Y; Y10; Y10S; Y10S420/00; Y10S420/901; Y10S505/00; Y10S505/80; Y10S505/801; Y10S505/804
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
63 words
Amorphous, superconducting, glassy alloys of the formula: (TM).sub.90-70 (M).sub.10-30 where TM is a transition metal mixture selected from the group consisting of MORu, MoRe or MoNbRe and M is a metalloid selected from B, P, C and Si, said alloys containing a dispersion of 1% to 10% by volume of flux pinning, crystalline inclusions having a diameter from 25 angstroms to 2000 angstroms.
Claim 2
Dependent Claim
63 words
Amorphous, superconducting, glassy alloys of the formula: (TM).sub.90-70 (M).sub.10-30 where TM is a transition metal mixture selected from the group consisting of MORu, MoRe or MoNbRe and M is a metalloid selected from B, P, C and Si, said alloys containing a dispersion of 1% to 10% by volume of flux pinning, crystalline inclusions having a diameter from 25 angstroms to 2000 angstroms.
Claim 3
Dependent Claim
15 words
An alloy according to claim 1 where M is a mixture of B and Si.
Claim 4
Dependent Claim
61 words
An alloy according to claim 2 selected from compounds of the formula: (Mo.sub.1-x Ru.sub.x).sub.m (B.sub.y Si.sub.1-y)100-m (Mo.sub.1-x Re.sub.x).sub.m (By Si.sub.1-y).sub.100-m or (Mo.sub.1-x-y Nb.sub.x Re.sub.z).sub.m (By Si.sub.1-y).sub.100-m where m is a mole percent from 75 to 85, x is a fraction from 0.1 to 0.8, y is a fraction from 0.1 to 0.8 and z is a fraction from 0.1 to 0.8.
Claim 5
Dependent Claim
21 words
An alloy according to claim 3 of the formula (Mo 0 .6 Ru 0 .4) 80 Si 10 B 10 .
Claim 6
Dependent Claim
20 words
An alloy according to claim 1 in which the crystalline inclusions have a diameter from 50 A to 250 A.
Claim 7
Dependent Claim
18 words
An alloy according to claim 1 in which the crystalline inclusions are uniformly distributed throughout the amorphous matrix.
Claim 8
Dependent Claim
13 words
An alloy according to claim 1 in the form of a thin ribbon.
Claim 9
Dependent Claim
17 words
An alloy according to claim 1, where the atomic percent of (M) is from 15 to 25.
References Cited (Backward Citations)
US4059441A
Cited
US4116687A
Cited
US4137075A
Cited
US4133681A
Cited
US4133679A
Cited
US4133682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |