Procedure for obtaining textured ceramic superconductors of trba2cu3o where tr rare earth or yttrium means, by directional solidification.

摘要

METHOD FOR OBTAINING TEXTURED SUPERCONDUCTING CERAMICS OF TRBA2CU3O WHERE DOES EARTH TR RARA O yttrium, by solidifying DIRECCIONAL. DIRECTIONAL solidification process CERAMICS MATRIX pre-sintered TRBA2CU3O7 IN WHICH HAS BEEN homogeneously mixed TR2BACUO5 ADDITIONAL AMOUNTS AND CEO2. AFTER MERGER incongruity of the mixture is obtained by reacting peritectic DIRECTIONAL SOLIDIFICATION AND STRIPES AND TEXTURED superconductors LINGOTES good mechanical properties and CRITICISM OVER CURRENT 1X106 A / cm2 at 5K and 1x105 A / cm2 at 77K VOID IN MAGNETIC FIELD. AS THE USE OF ADDITIVES CEO2 Control the crystallization process DIRECTIONAL DUE TO ITS INFLUENCE IN THE MIX semisolid FEATURES HIGH TEMPERATURE. At the same time microstructural characteristics END OF CERAMICS TEXTURED are modified LARGELY THROUGH THE USE OF SUCH ADDITIVES.