Optimization of Uranium Dioxide Structure for Use in the Fuel Elements of a Thermionic Converter Reactor

被引：0
|
作者：
A. S. Gontar'
A. A. Gridnev
E. M. Rakitskaya
M. V. Nelidov
V. N. Sotnikov
机构：
[1] Luch Scientific-Industrial Association,
来源：
Atomic Energy | 2005年 / 99卷
关键词：
Porosity; Dioxide; Uranium; Temperature Gradient; Deformation Rate;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The results are presented of an extra-reactor investigation of a change in the structure of the uranium dioxide in a high-temperature fuel element in the field of a temperature gradient using an electric heater. It is shown that the width of a columnar grain of the restructured dioxide can be decreased from the characteristic value 200–250 μm down to 100 μm using dioxide with thermally stabilized porosity with porosity up to 20%. The creep characteristics of columnar uranium dioxide within this width range of a columnar grain are presented.
引用
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页码：702 / 705
页数：3
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