EP0304061A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Superconducting ceramics elongated body and method of manufacturing the same
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1988-08-18
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Granted: —
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Expires: 2008-08-18
Abstract
Abstract A superconducting ceramics elongated body comprising a flexible ceramics elongated substrate and an oxide ceramics superconducting layer formed at least on a part of the surface of the ceramics elongated substrate to longitudinally extend along the ceramics elongated substrate. The superconducting ceramics elongated body further comprises a protective layer of ceramics containing a nitride, which is provided to at least cover the surface of the superconducting layer exposed on the ceramics elongated substrate. A method of manufacturing a superconducting ceramics elongated body by forming a longitudinally continuous superconducting layer on at least a part of the surface of a flexible ceramics elongated substrate. The superconducting layer is formed on the elongated substrate by a sol-gel method, a coating/sintering method, evaporation under oxygen ions, deposition from a fluoride solution or oxidation after application of corresponding fluorides.
Inventors
- 👤 Satoshi C/O Osaka Works Takano
- 👤 Kenichi C/O Osaka Works Takahashi
- 👤 Kenji C/O Osaka Works Miyazaki
- 👤 Noriyuki C/O Osaka Works Yoshida
- 👤 Shinji C/O Osaka Works Inazawa
- 👤 Noriki C/O Osaka Works Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 11:17
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/62222; C01; C01G; C01G3/00; C01G3/006; C04B35/01; C04B35/45; C04B35/4504; C04B35/4508; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/5072; C04B41/5074; C04B41/52; C04B41/80; C04B41/81; C04B41/85; C04B41/89; H; H10; H10N; H10N60/00; H10N60/01; H10N60/0268; H10N60/0296; H10N60/0324; H10N60/0381; H10N60/0436; H10N60/0548; H10N60/0576; H10N60/0632; H10N60/0801; H10W; H10W20/00; H10W20/40; H10W20/41; H10W20/44; H10W20/4484; C01P; C01P2002/00; C01P2002/30; C01P2002/34; C04B2111/00; C04B2111/00474; C04B2111/00844; C04B2111/50; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S505/00; Y10S505/70; Y10S505/701; Y10S505/702; Y10S505/703; Y10S505/704
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
38 words
A superconducting ceramics elongated body comprising: a flexible ceramics elongated substrate; and a ceramics superconducting layer formed on at least a part of the surface of said ceramics elongated substrate to longitudinally extend along said ceramics elongated substrate.
Claim 2
Dependent Claim
38 words
A superconducting ceramics elongated body comprising: a flexible ceramics elongated substrate; and a ceramics superconducting layer formed on at least a part of the surface of said ceramics elongated substrate to longitudinally extend along said ceramics elongated substrate.
Claim 3
Dependent Claim
22 words
A superconducting ceramics elongated body in accordance with claim 1, wherein said ceramics elongated substrate is in the form of a tape.
Claim 4
Dependent Claim
25 words
A superconducting ceramics elongated body in accordance with claim 2, wherein the thickness of said superconducting ceramics elongated body is not more than 500 µm.
Claim 5
Dependent Claim
25 words
A superconducting ceramics elongated body in accordance with claim 2, wherein the thickness of said superconducting ceramics elongated body is not more than 55 µm.
Claim 6
Dependent Claim
23 words
A superconducting ceramics elongated body in accordance with claim 1, wherein said ceramics elongated substrate is in the form of a round wire.
Claim 7
Dependent Claim
25 words
A superconducting ceramics elongated body in accordance with claim 5, wherein the diameter of said superconducting ceramics elongated body is not more than 500 µm.
Claim 8
Dependent Claim
25 words
A superconducting ceramics elongated body in accordance with claim 5, wherein the diameter of said superconducting ceramics elongated body is not more than 55 µm.
Claim 9
Independent Claim
141 words
A method of manufacturing a superconducting ceramics elongated body by forming a longitudinally continuous superconducting layer at least on a part of the surface of a flexible ceramics elongated substrate, said method comprising: a step of applying a solution, being obtained by adding water to an alcohol solution of a mixture containing at least compounds of either alkoxides or acetylacetonatos of respective metal elements for composing an oxide superconducting material and hydrolyzing the same, or a solution, being obtained by respectively adding water to alcohol solutions of said compounds of said respective metal elements for separately hydrolyzing the same and mixing said hydrolyzed solutions with each other, to at least a part of the surface of said ceramics elongated substrate; and a step of heating and firing said coating layer formed on said ceramics elongated substrate to provide said superconducting layer.
Claim 10
Independent Claim
141 words
A method of manufacturing a superconducting ceramics elongated body by forming a longitudinally continuous superconducting layer at least on a part of the surface of a flexible ceramics elongated substrate, said method comprising: a step of applying a solution, being obtained by adding water to an alcohol solution of a mixture containing at least compounds of either alkoxides or acetylacetonatos of respective metal elements for composing an oxide superconducting material and hydrolyzing the same, or a solution, being obtained by respectively adding water to alcohol solutions of said compounds of said respective metal elements for separately hydrolyzing the same and mixing said hydrolyzed solutions with each other, to at least a part of the surface of said ceramics elongated substrate; and a step of heating and firing said coating layer formed on said ceramics elongated substrate to provide said superconducting layer.
Claim 11
Independent Claim
66 words
A method of manufacturing a superconducting ceramics elongated body by forming a longitudinally continuous superconducting layer on at least a part of the surface of a flexible ceramics elongated substrate, said method comprising: a step of applying superconducting ceramics powder on the surface of said ceramics elongated substrate; and a step of heating and sintering applied said superconducting ceramics powder thereby to provide said superconducting layer.
Claim 12
Independent Claim
66 words
A method of manufacturing a superconducting ceramics elongated body by forming a longitudinally continuous superconducting layer on at least a part of the surface of a flexible ceramics elongated substrate, said method comprising: a step of applying superconducting ceramics powder on the surface of said ceramics elongated substrate; and a step of heating and sintering applied said superconducting ceramics powder thereby to provide said superconducting layer.
Claim 13
Independent Claim
79 words
A method of manufacturing a superconducting ceramics elongated body by forming a longitudinally continuous superconducting layer on at least a part of the surface of a flexible ceramics elongated substrate, said method comprising: a step of independently vaporizing simple substances or compounds containing metal elements for composing an oxide superconducting material under presence of oxygen ions respectively; and a step of depositing said vaporized simple substances or compounds on said ceramics elongated substrate thereby to form said superconducting layer.
Claim 14
Independent Claim
79 words
A method of manufacturing a superconducting ceramics elongated body by forming a longitudinally continuous superconducting layer on at least a part of the surface of a flexible ceramics elongated substrate, said method comprising: a step of independently vaporizing simple substances or compounds containing metal elements for composing an oxide superconducting material under presence of oxygen ions respectively; and a step of depositing said vaporized simple substances or compounds on said ceramics elongated substrate thereby to form said superconducting layer.
Claim 15
Independent Claim
140 words
A method of manufacturing a superconducting ceramics elongated body by forming a longitudinally continuous superconducting layer of oxide superconducting ceramics on at least a part of the surface of a flexible ceramics elongated substrate, said method comprising: a step of dissolving oxides serving as raw materials for said superconducting ceramics in a solution of at least one fluoride having a melting point lower than those of said oxides; a step of reacting said oxides in said fluoride solution to produce a composite oxide forming said superconducting ceramics; and a step of bringing said fluoride solution into contact with the surface of said ceramics elongated substrate while reducing temperature distribution of said fluoride solution toward the surface of said ceramics elongated substrate to deposit said composite oxide on the surface of said ceramics elongated substrate, thereby to form said superconducting layer.
Claim 16
Independent Claim
140 words
A method of manufacturing a superconducting ceramics elongated body by forming a longitudinally continuous superconducting layer of oxide superconducting ceramics on at least a part of the surface of a flexible ceramics elongated substrate, said method comprising: a step of dissolving oxides serving as raw materials for said superconducting ceramics in a solution of at least one fluoride having a melting point lower than those of said oxides; a step of reacting said oxides in said fluoride solution to produce a composite oxide forming said superconducting ceramics; and a step of bringing said fluoride solution into contact with the surface of said ceramics elongated substrate while reducing temperature distribution of said fluoride solution toward the surface of said ceramics elongated substrate to deposit said composite oxide on the surface of said ceramics elongated substrate, thereby to form said superconducting layer.
Claim 17
Dependent Claim
41 words
A method of manufacturing a superconducting ceramics elongated body in accordance with claim 11, wherein said dissolving step comprises a step of dissolving said oxides in a solution of a mixture of fluorides of metal elements for composing said superconducting ceramics.
Claim 18
Dependent Claim
41 words
A method of manufacturing a superconducting ceramics elongated body in accordance with claim 12, wherein the rates of respective metal elements contained in said mixture of said fluorides are equal to those of respective metal elements contained in said superconducting ceramics.
Claim 19
Independent Claim
109 words
A method of manufacturing a superconducting ceramics elongated body comprising: a step of mixing respective fluorides of cations for composing oxide superconducting ceramics so that the rates of respective said cations are equal to those of cations contained in said superconducting ceramics; a step of longitudinally continuously applying said mixture to at least a part of the surface of a flexible ceramics elongated substrate to form a coating layer; and a step of heating said coating layer under an oxygen gas atmosphere to replace fluorine contained in fluorides forming said coating layer by oxygen thereby to convert the composition of said coating layer into that of said superconducting ceramics.
Claim 20
Independent Claim
109 words
A method of manufacturing a superconducting ceramics elongated body comprising: a step of mixing respective fluorides of cations for composing oxide superconducting ceramics so that the rates of respective said cations are equal to those of cations contained in said superconducting ceramics; a step of longitudinally continuously applying said mixture to at least a part of the surface of a flexible ceramics elongated substrate to form a coating layer; and a step of heating said coating layer under an oxygen gas atmosphere to replace fluorine contained in fluorides forming said coating layer by oxygen thereby to convert the composition of said coating layer into that of said superconducting ceramics.
Claim 21
Dependent Claim
29 words
A method of manufacturing a superconducting ceramics elongated body in accordance with claim 14, wherein said mixing step comprises a step of bringing said mixture into a heated/molten state.
Claim 22
Dependent Claim
54 words
A method of manufacturing a superconducting ceramics elongated body in accordance with claim 14, wherein said mixing step comprises a step of mixing said fluorides in the form of fine particles, and said coating step comprises a step of heating and melting said mixture after applying the same in the form of fine particles.
Claim 23
Dependent Claim
64 words
A superconducting ceramics elongated body comprising: a flexible ceramics elongated substrate; an oxide ceramics superconducting layer formed on at least a part of the surface of said ceramics elongated substrate to longitudinally extend along said ceramics elongated substrate; and a protective layer of ceramics containing nitride, being provided to at least cover the surface of said superconducting layer exposed on said ceramics elongated substrate.
Claim 24
Dependent Claim
64 words
A superconducting ceramics elongated body comprising: a flexible ceramics elongated substrate; an oxide ceramics superconducting layer formed on at least a part of the surface of said ceramics elongated substrate to longitudinally extend along said ceramics elongated substrate; and a protective layer of ceramics containing nitride, being provided to at least cover the surface of said superconducting layer exposed on said ceramics elongated substrate.
Claim 25
Dependent Claim
37 words
A superconducting ceramics elongated body in accordance with claim 17, wherein said nitride is selected from a group of AlN, TiN, TiCN, Si₃N₄ and Si 6-z Al z O z N 8-z (0 < z ≦ 4.3).
References Cited (Backward Citations)
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