Effect of annealing atmosphere on the kinetics and mechanism of low-temperature decomposition of the nonstoichiometric Ba2YCu3O7-δ ceramics

被引：6
|
作者：
Bobylev, I. B. [1 ]
Zyuzeva, N. A. [1 ]
Romanov, E. P. [1 ]
机构：
[1] Russian Acad Sci, Inst Met Phys, Ural Div, Ekaterinburg 620041, Russia
来源：
PHYSICS OF METALS AND METALLOGRAPHY | 2008年 / 106卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1134/S0031918X08090081
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The effect of heat treatments in helium, nitrogen, and vacuum (P = 10(-2), 20, and 100 mmHg) on the kinetics of low-temperature decomposition (T < 400 degrees C) of the nonstoichiometric Ba2YCu3O7-delta ceramics has been studied. The decomposition in the vacuum was found to be very slow; the rate of the decomposition in both helium and nitrogen is substantially higher. The results obtained indicate the strong effect of the nature of gas absorbed on the grain surface. Possible mechanisms of the effect of absorption on the kinetics of low-temperature decomposition are considered.
引用
收藏
页码：284 / 290
页数：7
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