Patent ID: 6247224
Filing Date: 2001-06-19
Classification: B22F,C04B,C22C,H01L,Y10S,Y10T

Abstract:
A method of preparing an oxide superconductor article comprising:(a) providing a precursor article comprising:(i) a plurality of filaments comprising a precursor oxide in stoichiometric proportions to form an oxide superconductor, said filaments extending along the length of the article; and(ii) a constraining member substantially surrounding the filaments; and(b) subjecting the precursor oxide article to a texturing process comprising:(i) processing the article at an oxygen partial pressure in the range of about 10.sup.-5 to one atm O.sub.2 and at a temperature in the range of about 600.degree. C. to 850.degree. C.; and(ii) roll working the heated precursor article in a high reduction draft in the range of about 40% to 95% in thickness to provide a precursor oxide filament having a degree of texture greater than or equal to about 0.9 throughout the filament; and(c) sintering the rolled article to convert the precursor oxide filament into an oxide superconductor filament, whereby the oxide superconductor has a degree of texture of greater than or equal to about 0.9 throughout the oxide superconductor filament.