Synthesis of Bi-Ca-Sr-Cu-O superconductive material
Patent
·
OSTI ID:5223041
This patent describes a process for making a sinterable superconductive composition in powder form having the formula Bi{sub 2}CaSr{sub 2}Cu{sub 2}O{sub x} where x is from about 7.5 to about 8.5. It comprises forming an admixture comprising an alkali metal chloride solvent material selected from the group consisting of sodium chloride and potassium chloride and mixtures thereof, and the oxide or oxide precursors of bismuth, calcium, strontium, and copper in amounts sufficient to form the composition by reaction, heating the admixture to a temperature sufficient to melt the alkali metal chloride, dissolve the oxides of bismuth, calcium, strontium and copper and form the superconductive composition, maintaining the temperature to continuously dissolve reactant oxides or oxide precursors until substantially consumed by formation and precipitation of the composition from the reactant-saturated solvent material; cooling the molten mass to a solid; separating and recovering the superconductive composition by dissolving the alkali metal chloride solvent material in water; and comminuting the superconductive composition to produce powder.
- Assignee:
- General Electric Co., Schenectady, NY (United States)
- Patent Number(s):
- A; US 5096879
- Application Number:
- PPN: US 7-399197
- OSTI ID:
- 5223041
- Country of Publication:
- United States
- Language:
- English
Similar Records
Co-precipitation synthesis of precursors to bismuth-containing superconductors
Method of depositing thin films of high temperature Bi-Sr-Ca-Cu-O-based ceramic oxide superconductors
Synthesis of Bi-Pb-Ca-Sr-Cu-O superconductive material
Patent
·
Mon Dec 30 23:00:00 EST 1991
·
OSTI ID:5578180
Method of depositing thin films of high temperature Bi-Sr-Ca-Cu-O-based ceramic oxide superconductors
Patent
·
Mon Nov 04 23:00:00 EST 1991
·
OSTI ID:5300441
Synthesis of Bi-Pb-Ca-Sr-Cu-O superconductive material
Patent
·
Tue Oct 15 00:00:00 EDT 1991
·
OSTI ID:5606275
Related Subjects
36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360207 -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BISMUTH COMPOUNDS
CHEMICAL COMPOSITION
COPPER COMPOUNDS
CUPRATES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POWDERS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360207 -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BISMUTH COMPOUNDS
CHEMICAL COMPOSITION
COPPER COMPOUNDS
CUPRATES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POWDERS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS