Method of preparing YBa2Cu3O7 powder for forming by drawing-lamination

A method of preparing a powder of YBaCuO [phase 123] suitable for forming by drawing-lamination, which includes: preparing a powdered reactive mixture of precursors of purity greater than 99% and with a stoichiometry accurate to within less than 1%, binding this powdered reactive mixture to form int...

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Hauptverfasser:	AUDRY, CLAUDETTE, DUCATEL, FRANCOISE, DUPERRAY, G´RARD
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CABLES CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F CONCRETE CONDUCTORS ELECTRICITY INORGANIC CHEMISTRY INSULATORS LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS REFRACTORIES SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER SLAG TRANSPORTING TREATMENT OF NATURAL STONE WORKING CEMENT, CLAY, OR STONE
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Beschreibung
Zusammenfassung:	A method of preparing a powder of YBaCuO [phase 123] suitable for forming by drawing-lamination, which includes: preparing a powdered reactive mixture of precursors of purity greater than 99% and with a stoichiometry accurate to within less than 1%, binding this powdered reactive mixture to form intermediate pieces less than two millimeters in thickness which are placed in an oven so that their contact with a support is as small as possible, a heat treating the intermediate pieces, dry grinding the intermediate pieces to obtain grains of said powder with an average diameter of the order of a few mu m.