Fabrication and water-vapor corrosion resistance of Ba0.25Sr0.75 Al2Si2O8 environmental barrier coating

Lin Jing Lu; Lai Fei Cheng; Zhi Liang Hong; Yi Guang Wang; Li Tong Zhang

doi:10.3724/SP.J.1077.2011.00701

Fabrication and water-vapor corrosion resistance of Ba_0.25Sr_0.75 Al₂Si₂O₈ environmental barrier coating

Lin Jing Lu, Lai Fei Cheng^*, Zhi Liang Hong, Yi Guang Wang, Li Tong Zhang

^*Corresponding author for this work

Northwestern Polytechnical University Xian

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

4 Citations (Scopus)

Abstract

Ba_0.25Sr_0.75 Al₂Si₂O₈ (BSAS) as environmental barrier coating (EBC) was coated on the 2D C_f/SiC substrate using slurry-brushing process. The water-vapor corrosion resistance of C_f/SiC and C_f/SiC-BSAS were studied in 50%H₂O-50%O₂ water vapor under atmospheric pressure and static atmosphere at 1250°C, respectively. The results show that the dense BSAS coating with free cracks can be prepared by slurry-brushing method followed by heat-treatment at 1350°C in high purity argon. The coating thickness approximate to 15μm after pasted once, and can reach 50μm after pasted for three times. The weight and flexural strength of C_f/SiC-SiC decreases greatly, while the weight of C_f/SiC-BSAS has no obvious change and the flexural strength retention is over 90% after corroded for 100 h.

Original language	English
Pages (from-to)	701-706
Number of pages	6
Journal	Wuji Cailiao Xuebao/Journal of Inorganic Materials
Volume	26
Issue number	7
DOIs	https://doi.org/10.3724/SP.J.1077.2011.00701
Publication status	Published - Jul 2011
Externally published	Yes

Keywords

BSAS
Environmental barrier coating
Slurry
Water vapor corrosion

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10.3724/SP.J.1077.2011.00701

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title = "Fabrication and water-vapor corrosion resistance of Ba0.25Sr0.75 Al2Si2O8 environmental barrier coating",

abstract = "Ba0.25Sr0.75 Al2Si2O8 (BSAS) as environmental barrier coating (EBC) was coated on the 2D Cf/SiC substrate using slurry-brushing process. The water-vapor corrosion resistance of Cf/SiC and Cf/SiC-BSAS were studied in 50%H2O-50%O2 water vapor under atmospheric pressure and static atmosphere at 1250°C, respectively. The results show that the dense BSAS coating with free cracks can be prepared by slurry-brushing method followed by heat-treatment at 1350°C in high purity argon. The coating thickness approximate to 15μm after pasted once, and can reach 50μm after pasted for three times. The weight and flexural strength of Cf/SiC-SiC decreases greatly, while the weight of Cf/SiC-BSAS has no obvious change and the flexural strength retention is over 90% after corroded for 100 h.",

keywords = "BSAS, Environmental barrier coating, Slurry, Water vapor corrosion",

author = "Lu, {Lin Jing} and Cheng, {Lai Fei} and Hong, {Zhi Liang} and Wang, {Yi Guang} and Zhang, {Li Tong}",

year = "2011",

month = jul,

doi = "10.3724/SP.J.1077.2011.00701",

language = "English",

volume = "26",

pages = "701--706",

journal = "Wuji Cailiao Xuebao/Journal of Inorganic Materials",

issn = "1000-324X",

publisher = "Science China Press",

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T1 - Fabrication and water-vapor corrosion resistance of Ba0.25Sr0.75 Al2Si2O8 environmental barrier coating

AU - Lu, Lin Jing

AU - Cheng, Lai Fei

AU - Hong, Zhi Liang

AU - Wang, Yi Guang

AU - Zhang, Li Tong

PY - 2011/7

Y1 - 2011/7

N2 - Ba0.25Sr0.75 Al2Si2O8 (BSAS) as environmental barrier coating (EBC) was coated on the 2D Cf/SiC substrate using slurry-brushing process. The water-vapor corrosion resistance of Cf/SiC and Cf/SiC-BSAS were studied in 50%H2O-50%O2 water vapor under atmospheric pressure and static atmosphere at 1250°C, respectively. The results show that the dense BSAS coating with free cracks can be prepared by slurry-brushing method followed by heat-treatment at 1350°C in high purity argon. The coating thickness approximate to 15μm after pasted once, and can reach 50μm after pasted for three times. The weight and flexural strength of Cf/SiC-SiC decreases greatly, while the weight of Cf/SiC-BSAS has no obvious change and the flexural strength retention is over 90% after corroded for 100 h.

AB - Ba0.25Sr0.75 Al2Si2O8 (BSAS) as environmental barrier coating (EBC) was coated on the 2D Cf/SiC substrate using slurry-brushing process. The water-vapor corrosion resistance of Cf/SiC and Cf/SiC-BSAS were studied in 50%H2O-50%O2 water vapor under atmospheric pressure and static atmosphere at 1250°C, respectively. The results show that the dense BSAS coating with free cracks can be prepared by slurry-brushing method followed by heat-treatment at 1350°C in high purity argon. The coating thickness approximate to 15μm after pasted once, and can reach 50μm after pasted for three times. The weight and flexural strength of Cf/SiC-SiC decreases greatly, while the weight of Cf/SiC-BSAS has no obvious change and the flexural strength retention is over 90% after corroded for 100 h.

KW - BSAS

KW - Environmental barrier coating

KW - Slurry

KW - Water vapor corrosion

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DO - 10.3724/SP.J.1077.2011.00701

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JO - Wuji Cailiao Xuebao/Journal of Inorganic Materials

JF - Wuji Cailiao Xuebao/Journal of Inorganic Materials

IS - 7

ER -

Fabrication and water-vapor corrosion resistance of Ba_0.25Sr_0.75 Al₂Si₂O₈ environmental barrier coating

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Keywords

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