Hydrothermal corrosion behavior of SiCf/SiC composites candidate for PWR accident tolerant fuel cladding

Hong Yang; Xiaoqiang Li; Chuanxin Liu; Yahuan Zhao; Bo Chen; Xu Yang; Laifei Cheng; Litong Zhang

doi:10.1016/j.ceramint.2018.09.079

Hydrothermal corrosion behavior of SiC_f/SiC composites candidate for PWR accident tolerant fuel cladding

Hong Yang, Xiaoqiang Li, Chuanxin Liu, Yahuan Zhao, Bo Chen, Xu Yang, Laifei Cheng, Litong Zhang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

The corrosion behavior of the multi-layer SiC_f/SiC composite was investigated in pressurized, 360 °C purified water for its application as a candidate of accident tolerant fuel (ATF) cladding in pressurized water reactor (PWR). The weight change and hoop strength of specimens, the micro-morphology, phase and micro-constitution of the corrosion layers were analyzed and compared periodically in 30 days. The weight loss of samples in static water was severe and indicates a linear trend. It can be observed that the grain boundaries of the SiC dissolved preferentially and then exhibited the typical columnar structure. The corrosion products SiC_xO_y and SiO₂ are amorphous and readily dissolved into water, which eventually lead to the mass loss of the samples.

Original language	English
Pages (from-to)	22865-22873
Number of pages	9
Journal	Ceramics International
Volume	44
Issue number	18
DOIs	https://doi.org/10.1016/j.ceramint.2018.09.079
State	Published - 15 Dec 2018

Keywords

A. ATF claddings
B. SiC/SiC composites
C. Hydrothermal corrosion
D. Micro-structure

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10.1016/j.ceramint.2018.09.079

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title = "Hydrothermal corrosion behavior of SiCf/SiC composites candidate for PWR accident tolerant fuel cladding",

abstract = "The corrosion behavior of the multi-layer SiCf/SiC composite was investigated in pressurized, 360 °C purified water for its application as a candidate of accident tolerant fuel (ATF) cladding in pressurized water reactor (PWR). The weight change and hoop strength of specimens, the micro-morphology, phase and micro-constitution of the corrosion layers were analyzed and compared periodically in 30 days. The weight loss of samples in static water was severe and indicates a linear trend. It can be observed that the grain boundaries of the SiC dissolved preferentially and then exhibited the typical columnar structure. The corrosion products SiCxOy and SiO2 are amorphous and readily dissolved into water, which eventually lead to the mass loss of the samples.",

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author = "Hong Yang and Xiaoqiang Li and Chuanxin Liu and Yahuan Zhao and Bo Chen and Xu Yang and Laifei Cheng and Litong Zhang",

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T1 - Hydrothermal corrosion behavior of SiCf/SiC composites candidate for PWR accident tolerant fuel cladding

AU - Yang, Hong

AU - Li, Xiaoqiang

AU - Liu, Chuanxin

AU - Zhao, Yahuan

AU - Chen, Bo

AU - Yang, Xu

AU - Cheng, Laifei

AU - Zhang, Litong

PY - 2018/12/15

Y1 - 2018/12/15

N2 - The corrosion behavior of the multi-layer SiCf/SiC composite was investigated in pressurized, 360 °C purified water for its application as a candidate of accident tolerant fuel (ATF) cladding in pressurized water reactor (PWR). The weight change and hoop strength of specimens, the micro-morphology, phase and micro-constitution of the corrosion layers were analyzed and compared periodically in 30 days. The weight loss of samples in static water was severe and indicates a linear trend. It can be observed that the grain boundaries of the SiC dissolved preferentially and then exhibited the typical columnar structure. The corrosion products SiCxOy and SiO2 are amorphous and readily dissolved into water, which eventually lead to the mass loss of the samples.

AB - The corrosion behavior of the multi-layer SiCf/SiC composite was investigated in pressurized, 360 °C purified water for its application as a candidate of accident tolerant fuel (ATF) cladding in pressurized water reactor (PWR). The weight change and hoop strength of specimens, the micro-morphology, phase and micro-constitution of the corrosion layers were analyzed and compared periodically in 30 days. The weight loss of samples in static water was severe and indicates a linear trend. It can be observed that the grain boundaries of the SiC dissolved preferentially and then exhibited the typical columnar structure. The corrosion products SiCxOy and SiO2 are amorphous and readily dissolved into water, which eventually lead to the mass loss of the samples.

KW - A. ATF claddings

KW - B. SiC/SiC composites

KW - C. Hydrothermal corrosion

KW - D. Micro-structure

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U2 - 10.1016/j.ceramint.2018.09.079

DO - 10.1016/j.ceramint.2018.09.079

M3 - 文章

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SN - 0272-8842

VL - 44

SP - 22865

EP - 22873

JO - Ceramics International

JF - Ceramics International

IS - 18

ER -

Hydrothermal corrosion behavior of SiC_f/SiC composites candidate for PWR accident tolerant fuel cladding

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Keywords

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