CALCINED POWDER FOR PRODUCING BI-CONTAINING OXIDE SUPERCONDUCTOR AND BI-2223 PHASE POLYCRYSTALLINE BODY OBTAINED BY SINTERING SAME

PROBLEM TO BE SOLVED: To stably obtain a superconductor having high Jc by preparing calcined powder having a specified average particle diameter blended so as to give the compsn. of Bi-2223 phase crystals and sintering the powder contg. Bi-2212 phase crystals, impurity phases and a specified amt. or...

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Bibliographische Detailangaben
Hauptverfasser:	HASEYAMA HIDEETSU, KOJIMA MASAHIRO, SATO MAMORU, MURATA ATSUSHI, YOSHIZAWA HIDEJI
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 stably obtain a superconductor having high Jc by preparing calcined powder having a specified average particle diameter blended so as to give the compsn. of Bi-2223 phase crystals and sintering the powder contg. Bi-2212 phase crystals, impurity phases and a specified amt. or less of carbon. SOLUTION: This polycrystalline body obtd. by sintering the calcined powder has >=9,000A/cm Jc. The Bi-2223 phase crystals are represented by the formula Bia -Pbb -Src -Cad -Cu3 -Ox (where 1.20