区域熔炼YBaCuO吸氧过程研究

Oxygen absorption Process of Zone Melting YBaCuO

摘要:

在恒定温度下对区域熔炼的ＹＢａＣｕＯ晶体在空气及纯氧气氛下的吸氧过程进行了研究，表明该过程可以分为两个阶段，即化学反应控制阶段和扩散控制阶段。其动力学方程分别为 用阿累尼乌斯公式计算了激活能，同时讨论了高取向ＹＢａＣｕＯ晶体吸氧热处理工艺。

Abstract:

he Oxygen absorption processes in highly aligned YBaCuO samples in air and in pure oxygen were studied at several constant temperatures. The process can be expressed in two steps: a chemical reaction controlled step and a diffusion controlled step. The kineticequations are as follows, respectively:The activation energy was calculated by using an Arrhenius equation. The technicalconditions of heat treatment for oxygen absorption of highly aligned YBaCuO crystals are discussed.