Corrosion behavior of AlPO4 as environmental barrier coating in water vapor enviroment

Xian Hong Chen; Lai Fei Cheng; Yi Guang Wang; Li Tong Zhang; Zhi Liang Hong; Ya Hui Wu

doi:10.3724/SP.J.1077.2009.00397

Corrosion behavior of AlPO₄ as environmental barrier coating in water vapor enviroment

Xian Hong Chen, Lai Fei Cheng, Yi Guang Wang^*, Li Tong Zhang, Zhi Liang Hong, Ya Hui Wu

^*Corresponding author for this work

Northwestern Polytechnical University Xian

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

3 Citations (Scopus)

Abstract

AlPO₄ was synthesized by a Sol-Gel method. Its coefficient of thermal expansion (CTE) was measured by dilatometer. Its corrosion behavior was tested in an environment of 50vol%H₂O/50vol%O₂ with a flow rate of 0.085 cm/s at 1350°C. The phases and composition of the samples were analyzed by X-ray diffraction and Energy Dispersive Spectroscope. The microstructures of AlPO₄ were characterized by Scanning Electron Microscope. The results indicate that the CTE of AlPO₄ matches with that of C/SiC composites and its corrosion resistance is much better than that of SiC. However, the decomposition of AlPO₄ at high temperatures is the main problem in the water vapor enviroment, which will be accelerated in combination with silica.

Original language	English
Pages (from-to)	397-401
Number of pages	5
Journal	Wuji Cailiao Xuebao/Journal of Inorganic Materials
Volume	24
Issue number	2
DOIs	https://doi.org/10.3724/SP.J.1077.2009.00397
Publication status	Published - Mar 2009
Externally published	Yes

Keywords

AlPO
Compatibility
Environmental barrier coating
Water vapor corrosion

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10.3724/SP.J.1077.2009.00397

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title = "Corrosion behavior of AlPO4 as environmental barrier coating in water vapor enviroment",

abstract = "AlPO4 was synthesized by a Sol-Gel method. Its coefficient of thermal expansion (CTE) was measured by dilatometer. Its corrosion behavior was tested in an environment of 50vol%H2O/50vol%O2 with a flow rate of 0.085 cm/s at 1350°C. The phases and composition of the samples were analyzed by X-ray diffraction and Energy Dispersive Spectroscope. The microstructures of AlPO4 were characterized by Scanning Electron Microscope. The results indicate that the CTE of AlPO4 matches with that of C/SiC composites and its corrosion resistance is much better than that of SiC. However, the decomposition of AlPO4 at high temperatures is the main problem in the water vapor enviroment, which will be accelerated in combination with silica.",

keywords = "AlPO, Compatibility, Environmental barrier coating, Water vapor corrosion",

author = "Chen, {Xian Hong} and Cheng, {Lai Fei} and Wang, {Yi Guang} and Zhang, {Li Tong} and Hong, {Zhi Liang} and Wu, {Ya Hui}",

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doi = "10.3724/SP.J.1077.2009.00397",

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AU - Chen, Xian Hong

AU - Cheng, Lai Fei

AU - Wang, Yi Guang

AU - Zhang, Li Tong

AU - Hong, Zhi Liang

AU - Wu, Ya Hui

PY - 2009/3

Y1 - 2009/3

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AB - AlPO4 was synthesized by a Sol-Gel method. Its coefficient of thermal expansion (CTE) was measured by dilatometer. Its corrosion behavior was tested in an environment of 50vol%H2O/50vol%O2 with a flow rate of 0.085 cm/s at 1350°C. The phases and composition of the samples were analyzed by X-ray diffraction and Energy Dispersive Spectroscope. The microstructures of AlPO4 were characterized by Scanning Electron Microscope. The results indicate that the CTE of AlPO4 matches with that of C/SiC composites and its corrosion resistance is much better than that of SiC. However, the decomposition of AlPO4 at high temperatures is the main problem in the water vapor enviroment, which will be accelerated in combination with silica.

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KW - Environmental barrier coating

KW - Water vapor corrosion

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Corrosion behavior of AlPO₄ as environmental barrier coating in water vapor enviroment

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Keywords

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