Ceramics-Silikáty 40, (4) 131 - 136 (1996) |
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EFFECT OF GRINDING OF Y₂O₃, BaCO₃ AND CuO ON SYNTHESIS OF YBa₂Cu₃O₇
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Plešingerová Beatrice 1, Buchal Antonín 2, Šepelák Vladimír 3,
Tkáčová Klára 3
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1 Department of Chemistry, Faculty of Metallurgy, Technical University Košice,
Letná 9, 042 00 Košice, Slovak Republic
2 Institute of Material Engineering F. Píška, Technical University, Faculty of Mechanical Engineering,
Technická 2, 616 60 Brno
3 Institute of Geotechnics, Slovak Academy of Sciences,
Watsonova 45, 043 53 Košice, Slovak Renublic
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The very fine and surface reactive powder mixture was prepared by highly intensive short time mill grinding of the components Y₂O₃, BaCO₃ and CuO. Pure YBa₂Cu₃O₇ created by reaction of the components of grinding mixture at temperature 900 - 950°C. The temperature of the synthesis of YBa₂Cu₃O₇ decreased owing to the grinding about 50 to 100°C. Lower temperature of the synthesis had a positive effect on the purity of the final product. |
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