Patent ID: 6481091
Filing Date: 2002-11-19
Classification: C04B,H01L,Y10S,Y10T

Abstract:
A method of preparing a (Bi,Pb)SrCaCuO-2223 superconducting wire, comprising the steps of:(a) preparing a starting precursor powder with the oxygen content adjusted to the value of the final 2223 phase; (b) filling the starting powder into a metal sheath; (c) performing deformation processing on the metal sheath to form a composite wire and develop texture in the 2212 superconducting phases; (d) sealing the metal sheath so that a fixed oxygen content is maintained; (e) performing sintering to obtain the (Bi,Pb)SrCaCuO-2223 phase in which the sintering atmosphere is chosen suitable for the outside sheath metal; whereby an oxidizing metal can be used to replace a silver-based material as the sheath material to reduce the material cost and to improve the mechanical and thermal properties of the superconducting composite wire.