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报道了采用熔融慢冷工艺制备具有织构生长的YBCO体材的方法。较详细地阐述了粉末烧结YBCO坯料在1100℃下的熔融分解和随后通过包晶反应温度及附近温区的缓慢冷却速度对织构生长的影响,还报道了采用熔融慢冷工艺制备的YBCO体材的临界电流密度。结果表明,熔融慢冷工艺是一种制备具有高J_c值的YBCO体材的有效方法,采用这种工艺方法已获得临界电流密度达63405A/cm~2(77K,1T。H∥ab面)的YBCO体材样品。
A method for preparing a textured YBCO body by melt slow cooling is reported. The effects of melt-decomposition of powder-sintered YBCO billet at 1100 ℃ and subsequent slow-cooling rate on the growth of texture at the peritectic reaction temperature and near the temperature are described in more detail. The YBCO bulk prepared by the slow cooling and melting process Material critical current density. The results show that the slow cooling and melting process is an effective method for preparing YBCO with high Jc value. The critical current density of 63405A / cm ~ 2 (77K, 1T.H // ab plane) YBCO material samples.