Accession Number : ADD015532

Title :   Method of Producing Bi-Sr-Ca-Cu-O Superconducting Materials in Cast Form.

Descriptive Note : Patent Filed 28 Feb 90, patented 29 Sep 92,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Provenzano, Virgil ; Singh, Anand K ; Imam, M A ; Sadananda, Kuntimadi ; Henshaw, William F

Report Date : 29 Sep 1992

Pagination or Media Count : 6

Abstract : Bulk form of superconducting materials are produced by pouring a melt a O2-containing superconducting material into a heated mold, cooling the mold until solidification begins, removing the cast object from the mold, gradually cooling the cast object to prevent the development of thermal stresses, and then annealing the cast, cooled object to restore O2 to near equilibrium levels. The bulk form produced according to the present invention may be used as a sputtering target in the production of wires, or as a bulk form semiconductor.

Descriptors :   *MATERIALS, *PATENTS, *BISMUTH, *STRONTIUM, *CALCIUM, *COPPER, *OXYGEN, *SUPERCONDUCTIVITY, ANNEALING, COOLING, INVENTIONS, MELTS, PRODUCTION, SEMICONDUCTORS, SOLIDIFICATION, SPUTTERING, STRESSES, TARGETS, THERMAL STRESSES, WIRE, BULK MATERIALS, CASTING, HEAT, MOLDING TECHNIQUES, FABRICATION

Subject Categories : Electricity and Magnetism
      Laminates and Composite Materials
      Electrical and Electronic Equipment
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE