Polymer-derived yttrium silicate coatings on 2D C/SiC composites

Jia Liu; Litong Zhang; Fei Hu; Juan Yang; Laifei Cheng; Yiguang Wang

doi:10.1016/j.jeurceramsoc.2012.08.032

Polymer-derived yttrium silicate coatings on 2D C/SiC composites

Jia Liu, Litong Zhang, Fei Hu, Juan Yang, Laifei Cheng, Yiguang Wang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

70 Scopus citations

Abstract

Yttrium silicate environmental barrier coatings (EBCs) on C/SiC composites were fabricated by using polysiloxanes-derived ceramic process. In order to reduce the free silica in the resultant ceramic coatings, Y ₂O ₃ was added as an active filler. The materials with different weight ratios of polysiloxanes to Y ₂O ₃ were synthesized. Their coefficient of thermal expansion (CTE) and water-vapor resistance were tested. The results indicated that the composition of 50% Y ₂O ₃-50% polysiloxanes (Y50) was suitable to be the EBCs for C/SiC composites. The C/SiC composites coated with Y50 were tested in the water-vapor environments at 1400°C for 200h. The results revealed that such a coating could effectively protect the C/SiC composites.

Original language	English
Pages (from-to)	433-439
Number of pages	7
Journal	Journal of the European Ceramic Society
Volume	33
Issue number	2
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2012.08.032
State	Published - Feb 2013

Keywords

Active filler
Environmental barrier coatings
Polymer-derived ceramics
Yttrium silicate

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10.1016/j.jeurceramsoc.2012.08.032

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title = "Polymer-derived yttrium silicate coatings on 2D C/SiC composites",

abstract = "Yttrium silicate environmental barrier coatings (EBCs) on C/SiC composites were fabricated by using polysiloxanes-derived ceramic process. In order to reduce the free silica in the resultant ceramic coatings, Y 2O 3 was added as an active filler. The materials with different weight ratios of polysiloxanes to Y 2O 3 were synthesized. Their coefficient of thermal expansion (CTE) and water-vapor resistance were tested. The results indicated that the composition of 50% Y 2O 3-50% polysiloxanes (Y50) was suitable to be the EBCs for C/SiC composites. The C/SiC composites coated with Y50 were tested in the water-vapor environments at 1400°C for 200h. The results revealed that such a coating could effectively protect the C/SiC composites.",

keywords = "Active filler, Environmental barrier coatings, Polymer-derived ceramics, Yttrium silicate",

author = "Jia Liu and Litong Zhang and Fei Hu and Juan Yang and Laifei Cheng and Yiguang Wang",

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journal = "Journal of the European Ceramic Society",

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T1 - Polymer-derived yttrium silicate coatings on 2D C/SiC composites

AU - Liu, Jia

AU - Zhang, Litong

AU - Hu, Fei

AU - Yang, Juan

AU - Cheng, Laifei

AU - Wang, Yiguang

PY - 2013/2

Y1 - 2013/2

N2 - Yttrium silicate environmental barrier coatings (EBCs) on C/SiC composites were fabricated by using polysiloxanes-derived ceramic process. In order to reduce the free silica in the resultant ceramic coatings, Y 2O 3 was added as an active filler. The materials with different weight ratios of polysiloxanes to Y 2O 3 were synthesized. Their coefficient of thermal expansion (CTE) and water-vapor resistance were tested. The results indicated that the composition of 50% Y 2O 3-50% polysiloxanes (Y50) was suitable to be the EBCs for C/SiC composites. The C/SiC composites coated with Y50 were tested in the water-vapor environments at 1400°C for 200h. The results revealed that such a coating could effectively protect the C/SiC composites.

AB - Yttrium silicate environmental barrier coatings (EBCs) on C/SiC composites were fabricated by using polysiloxanes-derived ceramic process. In order to reduce the free silica in the resultant ceramic coatings, Y 2O 3 was added as an active filler. The materials with different weight ratios of polysiloxanes to Y 2O 3 were synthesized. Their coefficient of thermal expansion (CTE) and water-vapor resistance were tested. The results indicated that the composition of 50% Y 2O 3-50% polysiloxanes (Y50) was suitable to be the EBCs for C/SiC composites. The C/SiC composites coated with Y50 were tested in the water-vapor environments at 1400°C for 200h. The results revealed that such a coating could effectively protect the C/SiC composites.

KW - Active filler

KW - Environmental barrier coatings

KW - Polymer-derived ceramics

KW - Yttrium silicate

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Polymer-derived yttrium silicate coatings on 2D C/SiC composites

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Keywords

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