Method of producing an oxide superconductor withou

专利名称：Method of producing an oxide

superconductor without a sheath and anoxide superconductor produced by themethod

发明人：Ikeno, Yoshimitsu,Kohno, Osamu,Goto,

Kenji,Kume, Atsushi,Aoki, Shin'Ya,Sadakata,Nobuyuki,Sugimoto, Masaru,Usui,

Toshio,Nakagawa, Mikio,Yamaguchi, Taichi

申请号：EP88309193.6申请日：19881003公开号：EP0310453B2公开日：19970102

摘要：A method of producing a superconductor including a superconductive oxide.The superconductive oxide is represented by the formula ABCD provided that the A is atleast one selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb,Dy, Ho, Er, Tm, Yb and Lu, the B is at least one selected from the group consisting of Be,Sr, Mg, Ca, Ba and Ra, the C includes Cu, the D includes O, about 0.1 ≦ x ≦ about 2.0, about1 ≦ y ≦ about 3, about 1 ≦ z ≦ about 3, 0 ≦ ≦ 5, or by the formula ABCaCuO provided thatthe A includes Bi or Tl, the B includes Sr or Ba, about 1 ≦ x ≦ about 3, about 1 ≦ y ≦ about 3,about 0 ≦ z ≦ about 3 and about 0 ≦ i ≦ about 4. A filling material is charged into a metallicpipe for forming a preform. The filling material is at least material selected from thegroup consisting of a starting material powder of the superconductor, a powder of thesuperconductor and a compact made of the starting material powder and/or the

superconductive powder. The preform is reduced in cross-sectional area for forming acomposite including a core, made of the at least one filling material, and a metallic sheathcovering the core. The metallic sheath of the composite is removed for exposing thecore. The exposed core is heat treated for producing the superconductive oxide.

申请人：FUJIKURA LTD

地址：JP

国籍：JP

代理机构：Calderbank, Thomas Roger

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