Initial sintering kinetics of non-stoichiometric CeO2-x

被引：1

作者：

Watanabe, Masashi ^{[1
,2
]}

Seki, Takayuki ^{[3
]}

机构：

[1] Japan Atom Energy Agcy, Fuels & Mat Dept, 4002 Narita Cho, Oarai, Ibaraki 3111393, Japan

[2] Japan Atom Energy Agcy, Fuel Cycle Design Off, 4002 Narita Cho, Oarai, Ibaraki 3111393, Japan

[3] Inspect Dev Co Ltd, 3129-37 Muramatsu, Ibaraki 3191112, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2021年 / 272卷

关键词：

Initial sintering; Diffusion coefficient; Non-stoichiometry; GRAIN-BOUNDARY; DENSIFICATION BEHAVIOR; SURFACE-DIFFUSION; SELF-DIFFUSION; UO2; TRANSPORT; URANIUM; MECHANISMS; OXIDES; PUO2;

D O I：

10.1016/j.mseb.2021.115369

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of oxygen non-stoichiometry on the initial sintering behavior of CeO2 was investigated. It was found that the initial sintering of the stoichiometric and hypo-stoichiometric composition was controlled by the grain boundary diffusion. The activation energies of cation diffusion were derived from initial sintering data. Moreover, it is suggested that the cation diffusion was caused by a vacancy mechanism.

引用

页数：6

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