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7514388 |
Method of producing a material of oxide superconductor, method of producing an oxide superconducting wire, and superconducting apparatus
A method of producing a material of an oxide superconductor comprises the following steps: (a) in a solution, ionizing a material containing an atom for constituting the oxide superconductor, (b)...
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6209190 |
Production of MgO dispersed Bi-2223 superconductor
A process for producing Bi-2223 high T c superconductor in which fine MgO particles (<0.1 μm) are homogeneously distributed to provide flux pinning centers in Bi-2223 high T c superconductor...
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6174468 |
Superconductor fiber elongation with a heated injected gas
An improved method and apparatus for producing flexible fibers (30) of superconducting material includes a crucible (12) for containing a charge of the superconducting material. The material is...
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5814585 |
Bi(Pb)SrCaCuO superconductors
The invention relates to a spray pyrolytic process for the preparation of multi-element metal oxide powders useful as precursors of high temperature superconductor ceramics. Aerosols of aqueous...
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5660774 |
Process for making a sintered body from ultra-fine superconductive particles
A process for producing a sintered body from untra-fine superconductive particles. In the first step of this process, a ceramic precursor material containing yttrium, barium and copper cations, a...
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5614472 |
Spray-pyrolysis process of preparing superconductor precursors
The invention relates to a spray pyrolyric process for the preparation of multi-element metal oxide powders useful as precursors of high temperature superconductor ceramics. Aerosols of aqueous...
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5541154 |
Process for preparing a high-TC superconductor as a precursor material for the oxide-powder-in-tube method (OPIT)
Process for preparing a high-T c superconductor as a precursor material for the oxide-powder-in-tube method (OPIT). The present invention relates to a process for preparing a high-T c ...
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5523285 |
Rapid formation of phase-clean 110 K (Bi-2223) powders derived via freeze-drying process
A process for the preparation of amorphous precursor powders for Pb-doped Bi 2 Sr 2 Ca 2 Cu 3 O x (2223) includes a freeze-drying process incorporating a splat-freezing step. The process...
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5306704 |
Efficient incorporation of silver to improve superconducting fibers
An improved method for the efficient incorporation of a metal such as silver in a superconducting material includes blending the metal with a high temperature superconductor or precursor powder and...
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5177055 |
Process for the preparation of superconductor precursor metal oxide powders comprising spraying a mixed metal salt solution into a horizontal furnace
Disclosed is a process for the preparation of multi-element metal oxide, high temperature superconductor precursor powder comprising spraying a homogenous solution of a multi-element metal salt...
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5152973 |
Synthesis of submicron powders under reduced oxygen pressure
The invention process provides a metal oxide, or oxides of more than one more metal, wherein the oxides have a mean particle size less than 1 micron. The oxides are made by steps including (1)...
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5140005 |
Ceramic superconductive powder
A superconductive oxide powder is produced by a method comprising spray drying a slip to form agglomerates, feeding the agglomerates sequentially through a first and a second oxygen supported...
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5122505 |
Carbonate-free inorganic nitrates or oxides and process thereof
The present invention relates to an improved process to produce an essentially carbon-free nitrate of an alkali metal, alkaline earth metal, transition metal, lanthanide metal, actinide metal,...
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5118659 |
Production of superconductor materials using a helicoidal flow of hot gases to effect pulverization and drying
Finely divided, homogeneous and easily sintered superconducting powders of at least one rare earth element, e.g., yttrium and/or lanthanum, at least one alkaline earth metal, e.g., barium, calcium...
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5081102 |
Preparation of precursor superconductor metal oxide powders by spray calcination from atomized nitrate solution
A spray calcination process is provided for decomposing a metal nitrate solution to form fine grain multicomponent metal oxide powders of selected composition of particular utility as...
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5077267 |
Process for making composite high temperature superconductor copper wires
A process for forming a composite high temperature superconductor copper wire, said process comprising the steps of (1) directing a submicron sized powder of a superconducting ceramic material...
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5071828 |
Process for the production of a crystal-oriented surface layer of a ceramic high temperature superconductor
Process for the production of a polycrystalline, crystal-oriented layer of a high temperature superconductor of the class (Y,RE) Ba 2 Cu 3 O ≉7 on a substrate or between two substrates of Ag or...
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5061683 |
Process for making superconductors using barium hydroxide
There is disclosed an improved process for preparing a superconducting composition having the formula M w A z Cu v O x wherein M is selected from the group consisting if Bi, Tl, Y, Nd, Sm, Eu,...
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5061682 |
Ceramic precursor mixture and technique for converting the same to ceramic
Ceramic precursor mixtures containing a metal cation, a carbohydrate, and an anion capable of participating in an anionic oxidation-reduction reaction with the carbohydrate for continuous or...
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5053384 |
Method of producing superconducting fibers of bismuth strontium calcium copper oxide (Bi(2212) and Bi(2223))
Fibers of Bi(2212) have been produce by pendant drop melt extraction. This technique involves the end of a rod of Bi(2212) melted with a hydrogen-oxygen torch, followed by lowering onto the edge of...
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5028584 |
Process and apparatus for producing epitaxial and/or highly textured grown film, free of foreign phases, of a high-T.sub.c -oxide superconductor on a substrate
A process for producing an epitaxial and/or highly texturized grown film, free of foreign phases, of a high-T c -oxide superconductor on a substrate, in which an ablation process is triggered and...
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5021395 |
Process for making superconductors and their precursors
A process for preparing the superconductive material MBa 2 Cu 3 O x , M being, inter alia, yttrium and x being from about 6.5-7 and a precursor material MBa 2 Cu 3 O y , y being from about...
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5006504 |
Preparing superconducting ceramic materials
A process for the preparation of superconducting ceramic materials by a solid state reaction technique. The process is especially suited for production of powders including ≥95% of Ba 2 YCu 3 O...
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4985401 |
Method for producing a superconductor of an immiscible alloy and its oxide
A superconductor is produced by electric discharge explosion flame spraying of a composite body of constituents of an immiscible alloy. The electrically discharged composite body is deposited on a...
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4985400 |
Process for producing superconductive ceramics by atomization of alloy precurser under reactive atmospheres or post annealing under oxygen
The invention relates to a process for producing superconductive ceramics wherein, first, a liquid alloy melt is made of metals; this is carried out at a temperature at which the melt is chemically...
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4975415 |
Cryochemical method of preparing ultrafine particles of high-purity superconducting oxides
The present invention pertains to a method of preparing particles of superconducting ceramic powders, which method comprises: (a) dissolving the soluble salts of the cations in aqueous medium; ...
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4970194 |
Method of producing superconducting fibers of YBA2CU30X
Fibers of YBa 2 Cu 3 O x have been produce by pendant drop melt extraction. This technique involves the end of a rod of YBa 2 Cu 3 O x melted with a hydrogen-oxygen torch, followed by...
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4960752 |
Process to produce oriented high temperature superconductors
A method to manufacture bulk polycrystalline superconducting materials having properties closely related to the properties of a single crystal of the superconducting material is provided. The...
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4937225 |
Rapid solidification processing of oxide superconductors
A superconducting oxide is melted in an oxygen-rich environment, rapidly solidified and annealed in an oxygen atmosphere. The resulting material has a fine grain structure, is chemically...
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4898851 |
Process for making 90 k superconductors using a spray dried oxalate precursor
There is disclosed an improved process for preparing a superconducting composition having the formula MBa 2 Cu 3 O x wherein M is selected from the group consisting of Y, Nd, Sm, Eu, Gd, Dy, Ho,...
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