Accession Number : ADD015177

Title :   Continuous Process for Synthesis of High Temperature Superconductor Yarns and Wires.

Descriptive Note : Patent Application, Filed 31 Oct 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Divecha, Alan P ; Kerr, James M

Report Date : 31 Oct 1991

Pagination or Media Count : 11

Abstract : Numerous investigations have been made to develop flexible wires, tapes, ribbons and yarns. However, success has been elusive because of the inherent brittleness of high temperature superconductor compositions, including YBa2Cu3O7-x which is referred to herein as a 123 superconductor. It is known to synthesize 123 superconductors by many different methods. The principal requirement being that yttrium oxide, barium oxide and copper oxide in appropriate proportions and mixed thoroughly, must be subjected to elevated temperatures for a certain length of time to form the correct superconductor composition and crystal structure. Thus, high temperature superconductor synthesis and procedures to sinter and compact the 123 superconductor powders to produce the now famous Meissner effect are well known to those skilled in the art.

Descriptors :   BARIUM OXIDES, BRITTLENESS, CONTINUOUS PROCESSING, CRYSTAL STRUCTURE, HIGH TEMPERATURE, SINTERING, SUPERCONDUCTIVITY, SUPERCONDUCTORS, SYNTHESIS, TIME INTERVALS, WIRE, YARNS, YTTRIUM OXIDES

Subject Categories : Electricity and Magnetism
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE