Process for obtaining Hg1-xMxBa2-ySryCa2Cu3O8+2 superconducting wafers, components and powders at normal pressures

• Main Authors: PINOL VIDAL SALVADOR, CALLEJA LAZARO ALBERT, SIN XICOLA AGUSTI, OBRADORS BERENGUER XAVIER
• Format: Patent
• Language: English; Spanish
• Published: 16.06.2000
• Edition: 7
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

Process in which M means a cation which stabilizes the valency structure equal to or higher than mercury, characterized by the following steps: a) preparation of a homogeneous mixture of multiphase precursor oxides ; b) vapour-solid reaction giving rise to the superconducting phase within a matrix; and c) oxygenation between 250degreeC and 350degreeC of the powders and components obtained in step b), in a stream of oxygen at normal pressure for several days. These ceramic materials are currently of great interest as high-critical-temperature and high-critical-current superconductors and can be used in various electrical engineering systems. Process in which M means a cation which stabilizes the valency structure equal to or higher than mercury, characterized by the following steps: a) preparation of a homogeneous mixture of multiphase precursor oxides b) vapour-solid reaction giving rise to the superconducting phase within a matrix and c) oxygenation between 250degreeC and 350degreeC of the powders and components obtained in step b), in a stream of oxygen at normal pressure for several days. These ceramic materials are currently of great interest as high-critical-temperature and high-critical-current superconductors and can be used in various electrical engineering systems. (Machine-translation by Google Translate, not legally binding) Procedimiento de obtención de polvos, piezas y láminas superconductoras de Hg sub,1-x M sub,x Ba sub,2-y Sr sub,y Ca sub,2 CU sub,3 O sub,8+z a presiones normales. Procedimiento de obtención de polvos, piezas y láminas superconductoras de Hg sub,1-x M sub,x Ba sub,2-y Sr sub,y Ca sub,2 CU sub,3 O sub,8+z a presiones normales, donde M significa un catión que estabilice la estructura de valencia igual o más alta que el mercurio caracterizado por las siguientes etapas: a) preparación de una mezcla homogénea de óxidos precursores multifásicos; b) la reacción vapor-sólido dando lugar a la fase superconductora en el interior de una matriz; y c) la oxigenación entre 250ºC y 350ºC en corriente de oxígeno a presión normal durante varios días de los polvos y piezas obtenidas en la etapa b. Estos materiales cerámicas presentan actualmente un gran interés como superconductores de alta temperatura crítica y elevadas corrientes críticas, y son utilizables en diversos sistemas de ingeniería eléctrica.