SiC/HfC/SiC ablation resistant coating for carbon/carbon composites

Yongjie Wang; Hejun Li; Qiangang Fu; Heng Wu; Dongjia Yao; Hailiang Li

doi:10.1016/j.surfcoat.2012.03.039

SiC/HfC/SiC ablation resistant coating for carbon/carbon composites

Yongjie Wang, Hejun Li, Qiangang Fu, Heng Wu, Dongjia Yao, Hailiang Li

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

90 Scopus citations

Abstract

To improve the ablative resistance of carbon/carbon (C/C) composites, a SiC/HfC/SiC coating was prepared by a multi-step technique of diffusing reaction and chemical vapor deposition. The microstructure and morphology of the coatings were characterized by Scanning Electron Microscopy, X-ray diffraction. The coated C/C exhibits good ablation resistance. A compact glassy HfO ₂ layer was obtained on the coating surface after ablation, which can efficiently prevent C/C composites from ablation. Meanwhile, the outer SiC coating provides positive protection; Weight loss of the coated samples is only 2.3% after oxidation at 1500°C for 66h. HfSiO ₄ was formed during oxidation and characterized by a stable glassy phase which could protect C/C composites from oxidation.

Original language	English
Pages (from-to)	3883-3887
Number of pages	5
Journal	Surface and Coatings Technology
Volume	206
Issue number	19-20
DOIs	https://doi.org/10.1016/j.surfcoat.2012.03.039
State	Published - 25 May 2012

Keywords

Ablation resistance
Carbon/carbon composites
HfC
HfSiO
Oxidation

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10.1016/j.surfcoat.2012.03.039

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title = "SiC/HfC/SiC ablation resistant coating for carbon/carbon composites",

abstract = "To improve the ablative resistance of carbon/carbon (C/C) composites, a SiC/HfC/SiC coating was prepared by a multi-step technique of diffusing reaction and chemical vapor deposition. The microstructure and morphology of the coatings were characterized by Scanning Electron Microscopy, X-ray diffraction. The coated C/C exhibits good ablation resistance. A compact glassy HfO 2 layer was obtained on the coating surface after ablation, which can efficiently prevent C/C composites from ablation. Meanwhile, the outer SiC coating provides positive protection; Weight loss of the coated samples is only 2.3% after oxidation at 1500°C for 66h. HfSiO 4 was formed during oxidation and characterized by a stable glassy phase which could protect C/C composites from oxidation.",

keywords = "Ablation resistance, Carbon/carbon composites, HfC, HfSiO, Oxidation",

author = "Yongjie Wang and Hejun Li and Qiangang Fu and Heng Wu and Dongjia Yao and Hailiang Li",

year = "2012",

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doi = "10.1016/j.surfcoat.2012.03.039",

language = "英语",

volume = "206",

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journal = "Surface and Coatings Technology",

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publisher = "Elsevier B.V.",

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TY - JOUR

T1 - SiC/HfC/SiC ablation resistant coating for carbon/carbon composites

AU - Wang, Yongjie

AU - Li, Hejun

AU - Fu, Qiangang

AU - Wu, Heng

AU - Yao, Dongjia

AU - Li, Hailiang

PY - 2012/5/25

Y1 - 2012/5/25

N2 - To improve the ablative resistance of carbon/carbon (C/C) composites, a SiC/HfC/SiC coating was prepared by a multi-step technique of diffusing reaction and chemical vapor deposition. The microstructure and morphology of the coatings were characterized by Scanning Electron Microscopy, X-ray diffraction. The coated C/C exhibits good ablation resistance. A compact glassy HfO 2 layer was obtained on the coating surface after ablation, which can efficiently prevent C/C composites from ablation. Meanwhile, the outer SiC coating provides positive protection; Weight loss of the coated samples is only 2.3% after oxidation at 1500°C for 66h. HfSiO 4 was formed during oxidation and characterized by a stable glassy phase which could protect C/C composites from oxidation.

AB - To improve the ablative resistance of carbon/carbon (C/C) composites, a SiC/HfC/SiC coating was prepared by a multi-step technique of diffusing reaction and chemical vapor deposition. The microstructure and morphology of the coatings were characterized by Scanning Electron Microscopy, X-ray diffraction. The coated C/C exhibits good ablation resistance. A compact glassy HfO 2 layer was obtained on the coating surface after ablation, which can efficiently prevent C/C composites from ablation. Meanwhile, the outer SiC coating provides positive protection; Weight loss of the coated samples is only 2.3% after oxidation at 1500°C for 66h. HfSiO 4 was formed during oxidation and characterized by a stable glassy phase which could protect C/C composites from oxidation.

KW - Ablation resistance

KW - Carbon/carbon composites

KW - HfC

KW - HfSiO

KW - Oxidation

UR - http://www.scopus.com/inward/record.url?scp=84861460943&partnerID=8YFLogxK

U2 - 10.1016/j.surfcoat.2012.03.039

DO - 10.1016/j.surfcoat.2012.03.039

M3 - 文章

AN - SCOPUS:84861460943

SN - 0257-8972

VL - 206

SP - 3883

EP - 3887

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

IS - 19-20

ER -

SiC/HfC/SiC ablation resistant coating for carbon/carbon composites

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Keywords

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