Oxidation at high temperatures in steam atmosphere and quench of silicon carbide composites for nuclear application

被引：55

作者：

Avincola, V. Angelici ^{[1
]}

Grosse, M. ^{[1
]}

Stegmaier, U. ^{[1
]}

Steinbrueck, M. ^{[1
]}

Seifert, H. J. ^{[1
]}

机构：

[1] Karlsruhe Inst Technol, Eggenstein Leopoldshafen, Germany

来源：

NUCLEAR ENGINEERING AND DESIGN | 2015年 / 295卷

关键词：

TO-PASSIVE TRANSITION; WATER-VAPOR; BUBBLE FORMATION; KINETICS; SIO2; VOLATILIZATION; DIFFUSION; RECESSION; PRESSURE; OXYGEN;

D O I：

10.1016/j.nucengdes.2015.10.002

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：

After the Fukushima accidents, the need for a fuel-cladding system with better performance in accident conditions has been raised. Silicon carbide and its composites are nowadays candidates for replacing zirconium alloys as cladding material for light water reactors. This paper reports about oxidation and quench tests of relevant silicon carbide samples at temperatures up to 2000 degrees C in steam atmosphere. During the experiments the reaction gases were analyzed by mass spectrometry, and after the tests the samples were characterized by means of optical microscopy, scanning electron microscopy, as well as XRD and X-ray tomography. Oxidation results showed good resistance of SiC composite despite the formation of bubbles on the surface. The quench tests proved the samples retained their original shape. (c) 2015 Elsevier B.V. All rights reserved.

引用

页码：468 / 478

页数：11

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