Factors affecting the hydrothermal corrosion behavior of chemically vapor deposited silicon carbides

被引：21

作者：

Shin, Jung Ho ^{[1
]}

Kim, Daejong ^{[1
]}

Lee, Hyeon-Geun ^{[1
]}

Park, Ji Yeon ^{[1
]}

Kim, Weon-Ju ^{[1
]}

机构：

[1] Korea Atom Energy Res Inst, Nucl Mat Dev Div, 989-111 Daedeok Daero, Daejeon 305353, South Korea

来源：

JOURNAL OF NUCLEAR MATERIALS | 2019年 / 518卷

基金：

新加坡国家研究基金会;

关键词：

WATER; OXIDATION; CERAMICS; RESISTANCE;

D O I：

10.1016/j.jnucmat.2019.03.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The hydrothermal corrosion behavior of chemical-vapor-deposited SiC was investigated for application as nuclear fuel cladding in a pressurized water reactor (PWR). This paper presented the effect of grain size, stacking fault, electrical conductivity, and electrochemical properties on the hydrothermal corrosion behavior of the CVD SiC in a simulated PWR water loop at 360 degrees C and 18.5 MPa. The hydrothermal corrosion of SiC was strongly influenced by electrical conductivity. It was revealed that high electrical conductivity leads to high exchange current density, which allows SiO2/Si(OH)(4) to form easily on the SiC surface, allowing it to dissolve rapidly in the hydrothermal environment. (C) 2019 Elsevier B.V. All rights reserved.

引用

收藏

页码：350 / 356

页数：7

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