中文摘要：

渗入生长过程被用作的一种选择常规融化与细微地驱散的小尺寸 Y2BaCuO5 (Y211 ) 粒子为体积 YBa2Cu3O7x (Y123 ) 的准备处理技术。有微米大小的 Y211 的一致地分布式的粒子的体积 YBCO 超导体被方向性的渗入和生长准备(挖) 。在处理的各种各样的阶段的 Y211 粒子的微观结构变化被学习。大约 70% Y211 粒子在在最后的样品的 1 m 下面。沿着 c 轴和 ab 飞机的这材料的不同停止的生长机制被讨论。Undercooling 和粘性导致复杂厚边界层。沿着 c 轴的 Y123 生长因此被停止。在 ab 飞机前面的钇缺乏是生长在这个方向停止的主要原因。

英文摘要：

The infiltration-growth process was used as an altemative to conventional melt processing techniques for the preparation of bulk YBa2Cu3O7-x（Y123） with finely dispersed small size Y2BaCuO5（Y211） particles. Bulk YBCO superconductors with uniformly distributed particles of micron-sized Y211 were prepared by the directional infiltration and growth（DIG）. The microstructure changes of the Y211 particles at various stages of processing were studied. About 70% of Y211 particles are under 1 μm in the final sample. The different stopped growth mechanism of this material along the c axis and ab plane was discussed. Undercooling and viscosity lead to tanglesome thick boundary layer. So the Y123 growth along c axis is stopped. Yttrium lack in front of the ab plane is the main reason why the growth stops at this direction.