PURPOSE: To obtain a formed body excellent in adhesive strength and superconductivity by forming a filmy oxide superconductor on a metallic base material by a thermal spraying method and then subjecting the above to heating treatment in an oxygen-containing atmosphere.
CONSTITUTION: A precursor of oxide superconductor of Y-Ba-Cu-O type, etc., is thermally sprayed on a base material of Al, etc., by which a superconducting filmy substance is formed. Subsequently, heating treatment is applied to the above in an oxygen-containing atmosphere at 400W650°C for ≥1hr to form a formed body of oxide superconductor. By this method, as a base material, low-melting metals, such as Al, or metallic materials liable to form oxide scales at high temp., such as Fe, Ti, Ni, and Cu, can be used. Further, the formed body of oxide superconductor can be manufactured with obviating the necessity of high-temp. heating unlike the conventional ones.
MATSUBA HIRONORI
FUKUOKA SHINGORO
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