Computational estimate of the corrosion resistance of fuel microelements with silicon carbide cladding in a water medium at supercritical pressure

被引：2
作者：
Filippov, G. A.
Grishanin, E. I.
Lebedev, Yu. E.
Trubachev, V. M.
Fal'kovskii, L. N.
Fonarev, B. I.
机构：
[1] All-Russia Research and Planning-Design Institute, Atomic-Energy Machine Building
来源：
ATOMIC ENERGY | 2007年 / 102卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
Silicon Carbide; Thermolysis; Fuel Assembly; Pyrolytic Carbon; Corrosion Depth;
D O I：
10.1007/s10512-007-0030-2
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
A computational estimate of the corrosion resistance of a silicon carbide coating on spherical fuel microelements in a supercritical-pressure water medium at 350-700 degrees C is made for the nominal operating regime of the core of a light-water nuclear reactor. A model of the thermal dissociation of water and dissolution of a silicon oxide film is used to estimate the corrosion resistance of silicon carbide. An expression describing the dependence of the corrosion depth of a silicon carbide layer on the temperature and pressure of the medium (concentration of the products of dissociation of water) and the operating time of the fuel microelements is obtained on the basis of the model developed.
引用
收藏
页码：204 / 210
页数：7
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