Preparation and oxidation protection of CVD SiC/a-BC/SiC coatings for 3D C/SiC composites

Yongsheng Liu; Litong Zhang; Laifei Cheng; Wenbin Yang; Weihua Zhang; Yongdong Xu

doi:10.1016/j.corsci.2009.01.026

Preparation and oxidation protection of CVD SiC/a-BC/SiC coatings for 3D C/SiC composites

Yongsheng Liu, Litong Zhang, Laifei Cheng, Wenbin Yang, Weihua Zhang, Yongdong Xu

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

74 Scopus citations

Abstract

An amorphous boron carbide (a-BC) coating was prepared by LPCVD process from BCl₃-CH₄-H₂-Ar system. XPS result showed that the boron concentration was 15.0 at.%, and carbon was 82.0 at.%. One third of boron was distributed to a bonding with carbon and 37.0 at.% was dissolved in graphite lattice. A multiple-layered structure of CVD SiC/a-BC/SiC was coated on 3D C/SiC composites. Oxidation tests were conducted at 700, 1000, and 1200 °C in 14 vol.% H₂O/8 vol.% O₂/78 vol.% Ar atmosphere up to 100 h. The 3D C/SiC composites with the modified coating system had a good oxidation resistance. This resulted in the high strength retained ratio of the composites even after the oxidation.

Original language	English
Pages (from-to)	820-826
Number of pages	7
Journal	Corrosion Science
Volume	51
Issue number	4
DOIs	https://doi.org/10.1016/j.corsci.2009.01.026
State	Published - Apr 2009

Keywords

A. Ceramic matrix composites
B. SEM
B. Weight loss
B. XPS
C. Oxidation

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10.1016/j.corsci.2009.01.026

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title = "Preparation and oxidation protection of CVD SiC/a-BC/SiC coatings for 3D C/SiC composites",

abstract = "An amorphous boron carbide (a-BC) coating was prepared by LPCVD process from BCl3-CH4-H2-Ar system. XPS result showed that the boron concentration was 15.0 at.%, and carbon was 82.0 at.%. One third of boron was distributed to a bonding with carbon and 37.0 at.% was dissolved in graphite lattice. A multiple-layered structure of CVD SiC/a-BC/SiC was coated on 3D C/SiC composites. Oxidation tests were conducted at 700, 1000, and 1200 °C in 14 vol.% H2O/8 vol.% O2/78 vol.% Ar atmosphere up to 100 h. The 3D C/SiC composites with the modified coating system had a good oxidation resistance. This resulted in the high strength retained ratio of the composites even after the oxidation.",

keywords = "A. Ceramic matrix composites, B. SEM, B. Weight loss, B. XPS, C. Oxidation",

author = "Yongsheng Liu and Litong Zhang and Laifei Cheng and Wenbin Yang and Weihua Zhang and Yongdong Xu",

year = "2009",

month = apr,

doi = "10.1016/j.corsci.2009.01.026",

language = "英语",

volume = "51",

pages = "820--826",

journal = "Corrosion Science",

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TY - JOUR

T1 - Preparation and oxidation protection of CVD SiC/a-BC/SiC coatings for 3D C/SiC composites

AU - Liu, Yongsheng

AU - Zhang, Litong

AU - Cheng, Laifei

AU - Yang, Wenbin

AU - Zhang, Weihua

AU - Xu, Yongdong

PY - 2009/4

Y1 - 2009/4

N2 - An amorphous boron carbide (a-BC) coating was prepared by LPCVD process from BCl3-CH4-H2-Ar system. XPS result showed that the boron concentration was 15.0 at.%, and carbon was 82.0 at.%. One third of boron was distributed to a bonding with carbon and 37.0 at.% was dissolved in graphite lattice. A multiple-layered structure of CVD SiC/a-BC/SiC was coated on 3D C/SiC composites. Oxidation tests were conducted at 700, 1000, and 1200 °C in 14 vol.% H2O/8 vol.% O2/78 vol.% Ar atmosphere up to 100 h. The 3D C/SiC composites with the modified coating system had a good oxidation resistance. This resulted in the high strength retained ratio of the composites even after the oxidation.

AB - An amorphous boron carbide (a-BC) coating was prepared by LPCVD process from BCl3-CH4-H2-Ar system. XPS result showed that the boron concentration was 15.0 at.%, and carbon was 82.0 at.%. One third of boron was distributed to a bonding with carbon and 37.0 at.% was dissolved in graphite lattice. A multiple-layered structure of CVD SiC/a-BC/SiC was coated on 3D C/SiC composites. Oxidation tests were conducted at 700, 1000, and 1200 °C in 14 vol.% H2O/8 vol.% O2/78 vol.% Ar atmosphere up to 100 h. The 3D C/SiC composites with the modified coating system had a good oxidation resistance. This resulted in the high strength retained ratio of the composites even after the oxidation.

KW - A. Ceramic matrix composites

KW - B. SEM

KW - B. Weight loss

KW - B. XPS

KW - C. Oxidation

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U2 - 10.1016/j.corsci.2009.01.026

DO - 10.1016/j.corsci.2009.01.026

M3 - 文章

AN - SCOPUS:62849105031

SN - 0010-938X

VL - 51

SP - 820

EP - 826

JO - Corrosion Science

JF - Corrosion Science

IS - 4

ER -

Preparation and oxidation protection of CVD SiC/a-BC/SiC coatings for 3D C/SiC composites

Abstract

Keywords

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