SINTERING OF YBA2CU3OX BY WET GRAIN COATING

PROBLEM TO BE SOLVED: To provide a sintering process for a bulk material of an oxide type high-temperature superconductor having high critical current density by improving the characteristics of Yba2 Cu3 OX as a bulk material for an oxide type high- temperature superconductor. SOLUTION: The particle...

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Hauptverfasser:	TEI KIYOKUKOU, HIRAKAWA KAZUMI, KURIYAKI HISAO
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F CONCRETE INORGANIC CHEMISTRY LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a sintering process for a bulk material of an oxide type high-temperature superconductor having high critical current density by improving the characteristics of Yba2 Cu3 OX as a bulk material for an oxide type high- temperature superconductor. SOLUTION: The particles of an oxide type high-temperature superconductor Yba2 Cu3 OX are dipped in a solution comprising a solute SnI4 and a solvent and the solvent is evaporated to form a uniform SnI4 thin layer on the surface of the particles of Yba2 Cu3 OX. Then, the product is monoaxial compression- molded and sintered in an oxygen atmosphere at 900-1,100 deg.C to give a high- temperature superconductor having at least 500A/cm of critical current density at 77 deg. K and having improved intergranular linkage and good orientation.