Effects of water vapor on corrosion behaviors of C/SiC in oxidizing atmosphere containing Na 2SO 4 vapor

Xin'Gang Luan; Jun Zhang; Laifei Cheng

doi:10.1016/j.compositesb.2012.05.047

Effects of water vapor on corrosion behaviors of C/SiC in oxidizing atmosphere containing Na ₂SO ₄ vapor

Xin'Gang Luan, Jun Zhang, Laifei Cheng

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

18 Scopus citations

Abstract

Corrosion of a C/SiC composite has been investigated in the atmosphere containing oxygen, water vapor and sodium sulfate vapor at the temperatures range from 1000 to 1500 °C. The effect of water vapor on the corrosion mechanism of C/SiC were discussed based on the weight change, the residual strength change, the microstructure and calculated results from FactSage. The corrosion of C/SiC is attributed to (i) the permeation of gas through the SiO ₂ film below 1300 °C, (ii) the diffusion of oxidant through pores caused by bubbles broken in the SiO ₂ film above 1300 °C. The water vapor does not change the corrosion mechanism of C/SiC composite but the temperature range in which the corrosion mechanism works by accelerating the oxidation of SiC and the corrosion of SiO ₂.

Original language	English
Pages (from-to)	2968-2972
Number of pages	5
Journal	Composites Part B: Engineering
Volume	43
Issue number	8
DOIs	https://doi.org/10.1016/j.compositesb.2012.05.047
State	Published - Dec 2012

Keywords

A. Ceramic-matrix composites (CMCs)
B. Corrosion
C. Damage mechanics
D. Electron microscopy

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10.1016/j.compositesb.2012.05.047

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title = "Effects of water vapor on corrosion behaviors of C/SiC in oxidizing atmosphere containing Na 2SO 4 vapor",

abstract = "Corrosion of a C/SiC composite has been investigated in the atmosphere containing oxygen, water vapor and sodium sulfate vapor at the temperatures range from 1000 to 1500 °C. The effect of water vapor on the corrosion mechanism of C/SiC were discussed based on the weight change, the residual strength change, the microstructure and calculated results from FactSage. The corrosion of C/SiC is attributed to (i) the permeation of gas through the SiO 2 film below 1300 °C, (ii) the diffusion of oxidant through pores caused by bubbles broken in the SiO 2 film above 1300 °C. The water vapor does not change the corrosion mechanism of C/SiC composite but the temperature range in which the corrosion mechanism works by accelerating the oxidation of SiC and the corrosion of SiO 2.",

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author = "Xin'Gang Luan and Jun Zhang and Laifei Cheng",

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journal = "Composites Part B: Engineering",

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T1 - Effects of water vapor on corrosion behaviors of C/SiC in oxidizing atmosphere containing Na 2SO 4 vapor

AU - Luan, Xin'Gang

AU - Zhang, Jun

AU - Cheng, Laifei

PY - 2012/12

Y1 - 2012/12

N2 - Corrosion of a C/SiC composite has been investigated in the atmosphere containing oxygen, water vapor and sodium sulfate vapor at the temperatures range from 1000 to 1500 °C. The effect of water vapor on the corrosion mechanism of C/SiC were discussed based on the weight change, the residual strength change, the microstructure and calculated results from FactSage. The corrosion of C/SiC is attributed to (i) the permeation of gas through the SiO 2 film below 1300 °C, (ii) the diffusion of oxidant through pores caused by bubbles broken in the SiO 2 film above 1300 °C. The water vapor does not change the corrosion mechanism of C/SiC composite but the temperature range in which the corrosion mechanism works by accelerating the oxidation of SiC and the corrosion of SiO 2.

AB - Corrosion of a C/SiC composite has been investigated in the atmosphere containing oxygen, water vapor and sodium sulfate vapor at the temperatures range from 1000 to 1500 °C. The effect of water vapor on the corrosion mechanism of C/SiC were discussed based on the weight change, the residual strength change, the microstructure and calculated results from FactSage. The corrosion of C/SiC is attributed to (i) the permeation of gas through the SiO 2 film below 1300 °C, (ii) the diffusion of oxidant through pores caused by bubbles broken in the SiO 2 film above 1300 °C. The water vapor does not change the corrosion mechanism of C/SiC composite but the temperature range in which the corrosion mechanism works by accelerating the oxidation of SiC and the corrosion of SiO 2.

KW - A. Ceramic-matrix composites (CMCs)

KW - B. Corrosion

KW - C. Damage mechanics

KW - D. Electron microscopy

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DO - 10.1016/j.compositesb.2012.05.047

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SN - 1359-8368

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JO - Composites Part B: Engineering

JF - Composites Part B: Engineering

IS - 8

ER -

Effects of water vapor on corrosion behaviors of C/SiC in oxidizing atmosphere containing Na ₂SO ₄ vapor

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