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7985714 |
Nb3Sn superconducting wire and precursor therefor
A precursor for fabricating a Nb3Sn superconducting wire by an internal Sn process includes one or a plurality of stabilizing copper portions collectively disposed in the center, each stabilizing...
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7863221 |
Method for producing a superconducting material made of MgB2
For producing the superconducting material MgB2, a shapeable master alloy containing Mg and B, as well as at least one additional constituent, an LiMgB alloy is.1 The process permits the production...
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7338921 |
MgB2 superconductor and method for preparation thereof
An electrode is steeped in a solution of Mg and B and a negative voltage is applied to the electrode so as to precipitate superconductive MgB2 on the electrode. Superconductive MgB2 is easily...
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6812191 |
Superconducting bodies made of zinc-doped copper oxide material
Superconductive bodies composed of cuprate material having a very critical current density with outer magnetic fields of up to 5 tesla when the bodies have a content of zinc cations. The bodies can...
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6677278 |
Pb-Bi-Sr-Ca-Cu-oxide powder mix with enhanced reactivity and process for its manufacture
An Oxide Precursor Powder from the Pb—Bi—Sr—Ca—Cu—O 2223 System can be produced by heat treating powder, produced using the Spray Pyrolysis Process as described in: GB2210605 or EP0681989 between 7...
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6627582 |
Large superconductor and its intermediate, and method for manufacturing the same
A large superconductor intermediate of REBa2Cu3Ox system (where RE is one kind or a combination of rare earth elements including Y), characterized by a structure that oxide superconductors having...
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6562761 |
Coated conductor thick film precursor
Methods for preparing thick film rare-earth Ba2Cu3O7-δ (such as YBCO) superconductive layers, particularly including deposition of a precursor as a dispersion of solid-state materials, including a ...
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6559103 |
Method for producing superconducting oxide compounds
A process is provided for preparing solid superconducting mixed-metal oxides whereby the superconductor can be formed into any predetermined shape by way of viscous sol precursors. The...
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6332967 |
Electro-deposition of superconductor oxide films
Methods for preparing high quality superconducting oxide precursors which are well suited for further oxidation and annealing to form superconducting oxide films. The method comprises forming a...
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6219901 |
Oxide superconductor precursors
A composite for preparation of an oxide superconductor includes a primary alloy phase of constituent elements of a desired oxide superconductor; and a secondary phase comprising copper, the...
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6043198 |
High-Tc superconductor or precursor material for the oxide-powder-in-tube method (OPIT)
The present invention relates to a process for preparing a high-Tc superconductor as a precursor material for the oxide-powder-in-tube method, which involves mixing the oxides of the elements Bi,...
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5914297 |
Precursor composites for oxygen dispersion hardened silver sheathed superconductor composites
An oxide superconductor composite having improved texture and durability. The oxide superconductor composite includes an oxide superconductor phase substantially surrounded with/by a noble metal...
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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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5789348 |
Preparation of superconductor precursor powders
A process for the preparation of a precursor metallic powder composition for use in the subsequent formation of a superconductor. The process comprises the steps of providing an electrodeposition...
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5665682 |
Method of manufacturing an oxide superconductor with high critical current density
An oxide superconductor capable of realizing a high critical current density and its manufacturing method requiring only a low temperature heat treatment. An oxide superconductor has 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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5550104 |
Electrodeposition process for forming superconducting ceramics
A method for making superconducting ceramic precursor films by electrodeposition. In the electrodeposition step, superconducting precursor metal ions are electrodeposited onto a working electrode...
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5486501 |
Nonequilibrium precursors for superconductor materials and process for making shaped superconductor articles therefrom
BaCuO2.5 containing precursors for superconducting materials and process for making shaped superconductor articles therefrom.
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5476837 |
Process for preparing superconducting film having substantially uniform phase development
A process for preparing a superconducting film, such as a thallium-barium-calcium-copper oxide superconducting film, having substantially uniform phase development. The process comprises providing...
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5395821 |
Method of producing Pb-stabilized superconductor precursors and method of producing superconductor articles therefrom
Metal oxide superconductor powder precursors are prepared in an aerosol pyrolysis process. A solution of the metal cations is introduced into a furnace at 600°-1000° C. for 0.1 to 60 seconds. The p...
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5368768 |
Copper and barium (dialkylaminoalcoholate) solutions
Solubilized metal (dialkylaminoalcoholate) compounds in organic solvent can serve as a source of metal values for metal oxide-containing superconductor compositions. Stable solutions, resistant to...
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5310707 |
Substrate material for the preparation of oxide superconductors
A substrate material for the preparation of an oxide superconductor includes two different rare earth elements A' and A" in the IIIa group, Ga, and 0, the atomic ratio of these elements being...
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5300483 |
Process for preparing shaped superconductor materials via nonequilibrium precursors
A method is provided for preparing a precursor of a superconductor containing atoms of oxygen, atoms of copper and atoms of at least two other metals and sufficient atoms of oxygen so that up to,...
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5300486 |
Synthesis of BiPbSrCaCuO superconductor
A process and a precursor composition for preparing a lead-doped bismuth-strontium-calcium-copper oxide superconductor of the formula Bia Pbb Src Cad Cue Of wherein a is from about 1.7 to about...
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5290759 |
Process for making high temperature superconducting powders
Superconducting precursors, which can be made into metal oxide superconductors such as YBa2 Cu3 O6+x, and a process for their manufacture by the coprecipitation of 1-2-3 nitrates using inexpensive...
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5280011 |
Alignment technique for anisotropicly conductive crystals utilizing a non-static magnetic field
A method of processing polycrystalline material to achieve at least uniaxial crystal alignment utilizing the anisotropy of conductivity of the crystalline material. The polycrystalline material is...
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5219829 |
Process and apparatus for the preparation of pulverulent metal oxides for ceramic compositions
The invention relates to a process and an apparatus for converting metal nitrate or mixed metal nitrate solutions into the corresponding metal oxides in a microwave field. The invention consists in...
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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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5162299 |
Preparation of superconducting oxide precursor materials by pyrolysis from concentrated nitric acid solution
A superconducting oxide precursor material is prepared by dissolving soluble compounds containing the non-oxygen elements of the oxide in concentrated nitric acid, in which a decomposing agent for...
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5153172 |
Method for in-situ prevention of stable barium carbonate formation in high Tc ceramic superconductor including the use of iodine or an iodine containing compound
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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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5149682 |
Manufacturing method for superconducting ceramics and products thereof
Superior homogeneity in ceramic materials is achieved by reacting certain soluble metal salts with quaternary ammonium carbonates to form co-precipitated metal carbonates. The precipitate can be...
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5142074 |
High purity copper alkoxides
The invention relates to the preparation of high purity, chloride- and alkali metal-free copper (II) alkoxides by means of the reaction of an alcoholic alkali metal alkoxide solution with copper...
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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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5126321 |
Preparation of Bi-Sr-Ca-Cu-O superconductors from oxide-glass precursors
A superconductor and precursor therefor from oxide mixtures of Ca, Sr, Bi and Cu. Glass precursors quenched to elevated temperatures result in glass free of crystalline precipitates having enhanced...
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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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5114702 |
Method of making metal oxide ceramic powders by using a combustible amino acid compound
This invention is directed to the formation of homogeneous, aqueous precursor mixtures of at least one substantially soluble metal salt and a substantially soluble, combustible co-reactant...
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5084201 |
Soluble copper amino alkoxides
More storage stable solutions comprising an organic solvent containing a soluble copper amino alkoxide are disclosed. The compound is of the formula ##STR1## where and R is lower alkyl such as...
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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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5077265 |
Co-precipitation synthesis of precursors to bismuth-containing superconductors
A co-precipitation synthesis of precursors to bismuth-containing ceramic superconducting materials is disclosed in which bismuth and at least one other approrpiate metal are dissolved in a...
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5070072 |
Conductive articles and processes for their preparation
Articles are disclosed in which an electrically conductive layer on a substrate exhibits a superconducting transition temperature in excess of 30° K. Conductive layers are disclosed comprised of a ...
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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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5034373 |
Process for forming superconductor precursor
The invention provides a process for production of silver-containing precursor alloys to oxide superconductors, said alloys having reduced amounts of intermetallics. Powders containing metallic...
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5019555 |
High purity superconducting compositions and methods for their fabrication
The present invention is related to a composition and methods for producing highly pure, high temperature superconducting materials having the general formula MBa2 Cu3 O7-x, where M is yttrium or a...
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5011819 |
Process using supercritical conditions for producing highly accurate and homogeneous powder mixture useful in fabrication of high quality ceramic superconductors
A process is disclosed for the formation of a uniform and homogeneous mixture of a plurality of compounds in a desired stoichiometric ratio as a precipitate from a fluid under supercritical...
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5011822 |
Preparation of a uniform mixed metal oxide and superconductive oxides
A method for producing uniform mixed metal oxides, such as superconducting mixtures including Y1 Ba2 Cu3 O7-x, in which such metals are precipitated as their oxalates from alcoholic solutions of...
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5002926 |
Ceramic composition
Improved process for making Tl-Ca-Ba-Cu oxide superconductors. A solution of the nitrated of Ca, Ba, and Cu is reacted with a quaternary ammonium carbonate in a slurry (heel) of Tl2 O3. Carbonates...
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5001107 |
Method for the preparation of thallium-containing superconducting materials by precipitation
This invention provides improved methods for the preparation of precursor powders that are used in the preparation of superconducting ceramic materials that contain thallium. A first solution that...
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4962084 |
Production of oxidic superconductor precursors
A process for producing an oxidic superconductor precursor alloy which comprises mechanicallly allowing metallic elemental constituents of the oxidic superconductor in stoichiometric proportions...
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4956335 |
Conductive articles and processes for their preparation
A patterned crystalline superconducting layer is formed by first providing a copper oxide lift-off layer under an amorphous metal oxide superconducing precursor layer and then photolithographically...
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