Effect of deposition temperature on the corrosion behavior of CVD SiC coatings on SiCf/SiC composites under simulated PWR conditions

Yiming Qin; Xiaoqiang Li; Chuanxin Liu; Ce Zheng; Qingping Mao; Bo Chen; Ke Jing; Yaru Tan; Laifei Cheng; Litong Zhang

doi:10.1016/j.corsci.2020.109233

Effect of deposition temperature on the corrosion behavior of CVD SiC coatings on SiC_f/SiC composites under simulated PWR conditions

Yiming Qin, Xiaoqiang Li, Chuanxin Liu, Ce Zheng, Qingping Mao, Bo Chen, Ke Jing, Yaru Tan, Laifei Cheng, Litong Zhang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

24 Scopus citations

Abstract

To improve the hydrothermal corrosion resistance of SiC_f/SiC composites, SiC coatings were chemical vapor deposited at 1000, 1150 and 1200 °C. Their corrosion behaviors were investigated using immersion tests and various analytical methods. The intergranular corrosion phenomenon was observed at all three coatings. It caused the delamination on the surface of 1000 and 1150 °C coatings, whereas only the local fall-off of large grains occurred on the 1200 °C coating. The large grain size and high crystallinity of coating deposited at 1200 °C contributed to the excellent corrosion resistance compared with coatings deposited at other two temperatures.

Original language	English
Article number	109233
Journal	Corrosion Science
Volume	181
DOIs	https://doi.org/10.1016/j.corsci.2020.109233
State	Published - 1 Apr 2021

Keywords

Chemical vapor deposition
Corrosion resistance
Hydrothermal corrosion
Microstructure characterization
SiC coatings
SiC/SiC composites

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10.1016/j.corsci.2020.109233

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title = "Effect of deposition temperature on the corrosion behavior of CVD SiC coatings on SiCf/SiC composites under simulated PWR conditions",

abstract = "To improve the hydrothermal corrosion resistance of SiCf/SiC composites, SiC coatings were chemical vapor deposited at 1000, 1150 and 1200 °C. Their corrosion behaviors were investigated using immersion tests and various analytical methods. The intergranular corrosion phenomenon was observed at all three coatings. It caused the delamination on the surface of 1000 and 1150 °C coatings, whereas only the local fall-off of large grains occurred on the 1200 °C coating. The large grain size and high crystallinity of coating deposited at 1200 °C contributed to the excellent corrosion resistance compared with coatings deposited at other two temperatures.",

keywords = "Chemical vapor deposition, Corrosion resistance, Hydrothermal corrosion, Microstructure characterization, SiC coatings, SiC/SiC composites",

author = "Yiming Qin and Xiaoqiang Li and Chuanxin Liu and Ce Zheng and Qingping Mao and Bo Chen and Ke Jing and Yaru Tan and Laifei Cheng and Litong Zhang",

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year = "2021",

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doi = "10.1016/j.corsci.2020.109233",

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TY - JOUR

T1 - Effect of deposition temperature on the corrosion behavior of CVD SiC coatings on SiCf/SiC composites under simulated PWR conditions

AU - Qin, Yiming

AU - Li, Xiaoqiang

AU - Liu, Chuanxin

AU - Zheng, Ce

AU - Mao, Qingping

AU - Chen, Bo

AU - Jing, Ke

AU - Tan, Yaru

AU - Cheng, Laifei

AU - Zhang, Litong

PY - 2021/4/1

Y1 - 2021/4/1

N2 - To improve the hydrothermal corrosion resistance of SiCf/SiC composites, SiC coatings were chemical vapor deposited at 1000, 1150 and 1200 °C. Their corrosion behaviors were investigated using immersion tests and various analytical methods. The intergranular corrosion phenomenon was observed at all three coatings. It caused the delamination on the surface of 1000 and 1150 °C coatings, whereas only the local fall-off of large grains occurred on the 1200 °C coating. The large grain size and high crystallinity of coating deposited at 1200 °C contributed to the excellent corrosion resistance compared with coatings deposited at other two temperatures.

AB - To improve the hydrothermal corrosion resistance of SiCf/SiC composites, SiC coatings were chemical vapor deposited at 1000, 1150 and 1200 °C. Their corrosion behaviors were investigated using immersion tests and various analytical methods. The intergranular corrosion phenomenon was observed at all three coatings. It caused the delamination on the surface of 1000 and 1150 °C coatings, whereas only the local fall-off of large grains occurred on the 1200 °C coating. The large grain size and high crystallinity of coating deposited at 1200 °C contributed to the excellent corrosion resistance compared with coatings deposited at other two temperatures.

KW - Chemical vapor deposition

KW - Corrosion resistance

KW - Hydrothermal corrosion

KW - Microstructure characterization

KW - SiC coatings

KW - SiC/SiC composites

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U2 - 10.1016/j.corsci.2020.109233

DO - 10.1016/j.corsci.2020.109233

M3 - 文章

AN - SCOPUS:85099136330

SN - 0010-938X

VL - 181

JO - Corrosion Science

JF - Corrosion Science

M1 - 109233

ER -

Effect of deposition temperature on the corrosion behavior of CVD SiC coatings on SiC_f/SiC composites under simulated PWR conditions

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Keywords

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