VERFAHREN ZUR DARSTELLUNG EINES OXIDISCHEN SUPRALEITENDEN LEITERS UND EIN OXIDISCHER SUPRALEITENDER LEITER, HERGESTELLT NACH DIESEM VERFAHREN.

摘要

+28.10.87, 8.12.87, 6.11.87, 30.11.87, 30.11.87, 11.1.88, 28.12.87(2), 27.1.88, 8.3.88, 28.3.88(2),8.12.87, 6.11.87, 25.11.87, 2.10.87(2), 28.10.87, 6.11-87-JP-272303, 309998, 280450, 302178, 00329, 332407, 332408, 016305, 054042, 073929, 073928, 309996, 280452, 296704, 249525, 249526, 272304, 280453 A method of forming a superconducting wire, which includes a superconducting oxide, comprises the following steps:-filling material is charged into a metal pipe; the filling material consists of at least one of a powder of raw materials for superconductive oxide formn., a superconductive oxide powder, a compact made of the raw material powder or the superconducting oxide powder, (2) the resulting preform, comprising a core of filling material and a metal sheath, is reduced in cross sectional area, (3) metallic sheath of the area-reduced composite is removed, to expose the core, and (4) the exposed core is heat treated to expose the suprconducting oxide. The superconductive oxide has the formula AxByCzD7-d, where A is at least one of Sc, Y, La, Ce, Pr, Nd, Pm,Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu; B is at least one of Be, Sr, mg, Ca, Ba and Ra; C includes Cu; and the D includes O. x is 0.1-2.0, y is 1-3, z is 1-3 and d is 0-5. The pref. formula for the superconductive oxide is AxByCazCuiOj, where A includes Bi or Tl, and B includes Sr or Ba; -x is 1-3, y is 1-3, z is 1-3 and i is 0-4.