| 摘要 |
Preparation of a ceramic high-temperature superconductor in wire form based on (Y, RE)Ba2Cu3O6.5+y where RE = rare earth metal and 0 < y < 1, in which 80 to 95 % by weight of an ultrafine-grained powder (1) having globulitic particles with a maximum diameter of 1 mu m are processed with 0.5 to 3 % by weight of a powder (3) having needle- and plate-shaped particles having a length of 10 to 50 mu m, and 4 to 20 % by weight of an organic binder and solvents (5) to form a high-viscosity slip (7) and are pressed to form a strand (10) containing longitudinally-aligned needle- and plate-shaped particles, which are dried in air, fired and sintered to form a fibre (13).
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