| 摘要 |
PURPOSE:To obtain a superconducting material having superior superconducting characteristics such as transition temp. of superconductivity, etc., and having moreover high strength by coating a reinforcing material with a superconducting ceramic material consisting of a compound oxide having a specified compsn. contg. Bi, Pb, Sr, Ca and Cu. CONSTITUTION:A terget superconducting material is obtd. by coating a reinforcing material consisting of a carbon material, ceramic material, metallic material, glass material, etc., with a superconducting ceramic material expressed by the formula. The coating is performed by, for example, carrying out sputtering in oxidizing atmosphere to a target comprising a molded body of each oxide of Bi, Pb, Sr, Ca and Cu, or of powder of carbonates, etc., of each metal, as their precursor, to coat thus the reinforcing material with each oxide or carbonate of the element at the same time. Then, superconducting coating is formed by causing solid phase reaction of each oxide or precursor by calcining said coating layer for each reinforcing material. Suitable thickness of the superconductive coating is 0.1-100mum. |
