TaSi2 oxidation protective coating for SiC coated carbon/carbon composites

Xiaohong Shi; Xierong Zeng; Hejun Li; Qiangang Fu; Jizhao Zou

TaSi₂ oxidation protective coating for SiC coated carbon/carbon composites

Xiaohong Shi, Xierong Zeng, Hejun Li, Qiangang Fu, Jizhao Zou

School of Materials Sience and Engineering

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

23 Scopus citations

Abstract

In order to improve the oxidation protective property of carbon/carbon composites at high temperature, TaSi2 coating was prepared on the surface of SiC coated carbon/carbon composites by pack cementation technique. The crystal structure and morphology of the as-obtained coating was analyzed by XRD and SEM with EDS. The isothermal oxidation test was carried out in air at 1773 K. The results show that the as-prepared coating is composed of SiC, Si and TaSi₂. The multilayer coating is about 200 μm in thickness, and there are no cracks in it. The results of EDS indicate that TaSi₂ can effectively fill the holes of SiC coating. There is no visible interface between the TaSi₂ outer coating and the SiC inner coating. The isothermal oxidation curve of the TaSi₂/SiC coated carbon/carbon composites reveals that the coating can effectively protect carbon/carbon composites for 233 h at 1773 K.

Original language	English
Pages (from-to)	403-406
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	40
Issue number	3
State	Published - Mar 2011

Keywords

Carbon/carbon composites
Coating
SiC
TaSi

Cite this

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title = "TaSi2 oxidation protective coating for SiC coated carbon/carbon composites",

abstract = "In order to improve the oxidation protective property of carbon/carbon composites at high temperature, TaSi2 coating was prepared on the surface of SiC coated carbon/carbon composites by pack cementation technique. The crystal structure and morphology of the as-obtained coating was analyzed by XRD and SEM with EDS. The isothermal oxidation test was carried out in air at 1773 K. The results show that the as-prepared coating is composed of SiC, Si and TaSi2. The multilayer coating is about 200 μm in thickness, and there are no cracks in it. The results of EDS indicate that TaSi2 can effectively fill the holes of SiC coating. There is no visible interface between the TaSi2 outer coating and the SiC inner coating. The isothermal oxidation curve of the TaSi2/SiC coated carbon/carbon composites reveals that the coating can effectively protect carbon/carbon composites for 233 h at 1773 K.",

keywords = "Carbon/carbon composites, Coating, SiC, TaSi",

author = "Xiaohong Shi and Xierong Zeng and Hejun Li and Qiangang Fu and Jizhao Zou",

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T1 - TaSi2 oxidation protective coating for SiC coated carbon/carbon composites

AU - Shi, Xiaohong

AU - Zeng, Xierong

AU - Li, Hejun

AU - Fu, Qiangang

AU - Zou, Jizhao

PY - 2011/3

Y1 - 2011/3

N2 - In order to improve the oxidation protective property of carbon/carbon composites at high temperature, TaSi2 coating was prepared on the surface of SiC coated carbon/carbon composites by pack cementation technique. The crystal structure and morphology of the as-obtained coating was analyzed by XRD and SEM with EDS. The isothermal oxidation test was carried out in air at 1773 K. The results show that the as-prepared coating is composed of SiC, Si and TaSi2. The multilayer coating is about 200 μm in thickness, and there are no cracks in it. The results of EDS indicate that TaSi2 can effectively fill the holes of SiC coating. There is no visible interface between the TaSi2 outer coating and the SiC inner coating. The isothermal oxidation curve of the TaSi2/SiC coated carbon/carbon composites reveals that the coating can effectively protect carbon/carbon composites for 233 h at 1773 K.

AB - In order to improve the oxidation protective property of carbon/carbon composites at high temperature, TaSi2 coating was prepared on the surface of SiC coated carbon/carbon composites by pack cementation technique. The crystal structure and morphology of the as-obtained coating was analyzed by XRD and SEM with EDS. The isothermal oxidation test was carried out in air at 1773 K. The results show that the as-prepared coating is composed of SiC, Si and TaSi2. The multilayer coating is about 200 μm in thickness, and there are no cracks in it. The results of EDS indicate that TaSi2 can effectively fill the holes of SiC coating. There is no visible interface between the TaSi2 outer coating and the SiC inner coating. The isothermal oxidation curve of the TaSi2/SiC coated carbon/carbon composites reveals that the coating can effectively protect carbon/carbon composites for 233 h at 1773 K.

KW - Carbon/carbon composites

KW - Coating

KW - SiC

KW - TaSi

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JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 3

ER -

TaSi₂ oxidation protective coating for SiC coated carbon/carbon composites

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