Multilayer oxidation resistant coating for SiC coated carbon/carbon composites at high temperature

He Jun Li; Geng Sheng Jiao; Ke Zhi Li; Chuang Wang

doi:10.1016/j.msea.2007.04.053

Multilayer oxidation resistant coating for SiC coated carbon/carbon composites at high temperature

He Jun Li, Geng Sheng Jiao, Ke Zhi Li, Chuang Wang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

31 Scopus citations

Abstract

To prevent carbon/carbon (C/C) composites from oxidation, a multilayer coating based on molybdenum disilicide and titanium disilicide was formed using a two-step pack cementation technique in argon atmosphere. XRD and SEM analysis showed that the internal coating was a bond SiC layer that acts as a buffer layer, and that the external multilayer coating formed in the two-step pack cementation was composed of two MoSi₂-TiSi₂-SiC layers. This coating, which is characterized by excellent thermal shock resistance, could effectively protect the composites from exposure to an oxidizing atmosphere at 1773 K for 79 h. The oxidation of the coated C/C composites was primarily due to the reaction of C/C matrix and oxygen diffusing through the penetrable cracks in the coating.

Original language	English
Pages (from-to)	279-284
Number of pages	6
Journal	Materials Science and Engineering: A
Volume	475
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2007.04.053
State	Published - 25 Feb 2008

Keywords

Carbon/carbon composites
Coating
Oxidation

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10.1016/j.msea.2007.04.053

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title = "Multilayer oxidation resistant coating for SiC coated carbon/carbon composites at high temperature",

abstract = "To prevent carbon/carbon (C/C) composites from oxidation, a multilayer coating based on molybdenum disilicide and titanium disilicide was formed using a two-step pack cementation technique in argon atmosphere. XRD and SEM analysis showed that the internal coating was a bond SiC layer that acts as a buffer layer, and that the external multilayer coating formed in the two-step pack cementation was composed of two MoSi2-TiSi2-SiC layers. This coating, which is characterized by excellent thermal shock resistance, could effectively protect the composites from exposure to an oxidizing atmosphere at 1773 K for 79 h. The oxidation of the coated C/C composites was primarily due to the reaction of C/C matrix and oxygen diffusing through the penetrable cracks in the coating.",

keywords = "Carbon/carbon composites, Coating, Oxidation",

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TY - JOUR

T1 - Multilayer oxidation resistant coating for SiC coated carbon/carbon composites at high temperature

AU - Li, He Jun

AU - Jiao, Geng Sheng

AU - Li, Ke Zhi

AU - Wang, Chuang

PY - 2008/2/25

Y1 - 2008/2/25

N2 - To prevent carbon/carbon (C/C) composites from oxidation, a multilayer coating based on molybdenum disilicide and titanium disilicide was formed using a two-step pack cementation technique in argon atmosphere. XRD and SEM analysis showed that the internal coating was a bond SiC layer that acts as a buffer layer, and that the external multilayer coating formed in the two-step pack cementation was composed of two MoSi2-TiSi2-SiC layers. This coating, which is characterized by excellent thermal shock resistance, could effectively protect the composites from exposure to an oxidizing atmosphere at 1773 K for 79 h. The oxidation of the coated C/C composites was primarily due to the reaction of C/C matrix and oxygen diffusing through the penetrable cracks in the coating.

AB - To prevent carbon/carbon (C/C) composites from oxidation, a multilayer coating based on molybdenum disilicide and titanium disilicide was formed using a two-step pack cementation technique in argon atmosphere. XRD and SEM analysis showed that the internal coating was a bond SiC layer that acts as a buffer layer, and that the external multilayer coating formed in the two-step pack cementation was composed of two MoSi2-TiSi2-SiC layers. This coating, which is characterized by excellent thermal shock resistance, could effectively protect the composites from exposure to an oxidizing atmosphere at 1773 K for 79 h. The oxidation of the coated C/C composites was primarily due to the reaction of C/C matrix and oxygen diffusing through the penetrable cracks in the coating.

KW - Carbon/carbon composites

KW - Coating

KW - Oxidation

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U2 - 10.1016/j.msea.2007.04.053

DO - 10.1016/j.msea.2007.04.053

M3 - 文章

AN - SCOPUS:38749103197

SN - 0921-5093

VL - 475

SP - 279

EP - 284

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 1-2

ER -

Multilayer oxidation resistant coating for SiC coated carbon/carbon composites at high temperature

Abstract

Keywords

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