Kinetics of UO2 oxidation in steam atmosphere

被引：15

作者：

Dobrov, BV

Likhanskii, VV

Ozrin, VD

Solodov, AA

Kissane, MP

Manenc, H

机构：

[1] Russian Acad Sci, Nucl Safety Inst, Moscow 113191, Russia

[2] Russian Res Ctr Triniti, Moscow 113191, Russia

[3] CE Cadarache, Inst Protect & Surete Nucl, F-13108 St Paul Durance, France

来源：

JOURNAL OF NUCLEAR MATERIALS | 1998年 / 255卷 / 01期

关键词：

D O I：

10.1016/S0022-3115(97)00364-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An adsorption model for calculation of UO(2 )oxidation in H2O/H-2 gas mixture is proposed. The model is based on the assumption that the rate of fuel oxidation by steam is controlled mainly by surface oxygen exchange reactions which are described in terms of Langmuir-like theory. Corrections to the oxidation rate related to the volume diffusion of oxygen are taken into account using an adiabatic approach to the diffusion problem. Parameters of the model were optimized on the experiments with steam pressure up to 10(5) Pa at 1200 to 2000 K. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：59 / 66

页数：8