US4939308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming crystallite-oriented superconducting ceramics by electrodeposition and thin film superconducting ceramic made thereby
Assignee: Honeywell International Inc
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Filing: 1988-05-20
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Granted: 1990-07-03
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Expires: 2008-05-20
Abstract
Abstract The invention relates to an improvement in a method of forming deposits of superconducting ceramics. Generally, such ceramics are formed by electrodepositing a mixture of metals of the type and in proportions sufficient to be oxidized into ceramic; oxidizing the electrodeposited mixture under conditions sufficient to result in a superconducting ceramic deposit; and orienting the crystallites in said superconducting ceramic deposit. Crystallite orientation may take place before, after or during the oxidation step.
Inventors
- 👤 MacRae Maxfield
- 👤 Ray H. Baughman
- 👤 Zafar Igbal
- 👤 Helmut Eckhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:25
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/45; C04B35/4504; C04B35/4521; C04B35/622; C04B35/64; C04B35/65; H; H10; H10N; H10N60/00; H10N60/01; H10N60/0268; H10N60/0296; H10N60/0548; H10N60/0576; H10N60/0661; Y; Y10; Y10S; Y10S420/00; Y10S420/901; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S505/00; Y10S505/725; Y10S505/729; Y10S505/736
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
93 words
A method of forming crystallite-oriented deposits of superconducting ceramics comprising the steps of: (a) Electrodepositing a mixture of metals onto a substrate to form thereon a layer of metals of the type and in proportions sufficient to be oxidized into superconducting ceramic: (b) oxidizing said layer of metals by subjecting it at elevated temperature to an oxidizing atmosphere under conditions sufficient to result in a superconducting ceramic deposit: and (c) orienting the crystallites in said superconducting ceramic deposit, whereby there is obtained an increase in the critical current density of the superconducting ceramic.
Claim 2
Independent Claim
93 words
A method of forming crystallite-oriented deposits of superconducting ceramics comprising the steps of: (a) Electrodepositing a mixture of metals onto a substrate to form thereon a layer of metals of the type and in proportions sufficient to be oxidized into superconducting ceramic: (b) oxidizing said layer of metals by subjecting it at elevated temperature to an oxidizing atmosphere under conditions sufficient to result in a superconducting ceramic deposit: and (c) orienting the crystallites in said superconducting ceramic deposit, whereby there is obtained an increase in the critical current density of the superconducting ceramic.
Claim 3
Dependent Claim
16 words
The method of claim 1 wherein crystallites are oriented by melting and resolidifying the electrodeposited metals.
Claim 4
Dependent Claim
17 words
The method of claim 1 wherein crystallites are oriented by melting and resolidifying the oxidized superconducting ceramic.
Claim 5
Dependent Claim
21 words
The method of claim 1 wherein crystallites are oriented by mechanically deforming the superconducting ceramic during or following the oxidation step.
Claim 6
Dependent Claim
14 words
The method of claim 1 in which the electrodeposited mixture of metals contains copper.
Claim 7
Dependent Claim
17 words
The method of claim 1 in which the electrodeposited mixture of metals contains both silver and copper.
Claim 8
Dependent Claim
20 words
The method of claim 1 in which the electrodeposition of the mixture of metals is made in a patterned array.
Claim 9
Dependent Claim
21 words
The method of claim 3 wherein melting and resolidification take place in a moving interface between solidified and molten superconducting ceramic.
Claim 10
Dependent Claim
19 words
The method of claim 4 wherein crystallites are oriented by mechanically deforming the superconducting ceramic following the oxidation step.
Claim 11
Dependent Claim
18 words
The method of claim 9 wherein the mixture of metals is electrodeposited on an essentially flat, flexible substrate.
Claim 12
Dependent Claim
18 words
The method of claim 10 wherein the mixture of metals is electrodeposited on a fiber or wire substrate.
References Cited (Backward Citations)
US4826808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-02 | 1994-01-01 | 1994-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-02 | 1998-01-01 | 1998-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-02 | 2002-01-01 | 2002-07-03 | $7700.00 | Window Closed / Lapsed |