Effects of the second phase on the microstructure and ablation resistance of HfC coating on C/C composites

Jincui Ren; Yulei Zhang; Yanqin Fu; Pengfei Zhang; Song Tian; Leilei Zhang

doi:10.1016/j.surfcoat.2018.03.023

Effects of the second phase on the microstructure and ablation resistance of HfC coating on C/C composites

Jincui Ren, Yulei Zhang, Yanqin Fu, Pengfei Zhang, Song Tian, Leilei Zhang

School of Materials Sience and Engineering

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

42 Scopus citations

Abstract

To improve the ablation resistance of HfC coating on carbon/carbon composites prepared by supersonic atmospheric plasma spraying, SiC, TaC and ZrC ceramics were added into HfC coating as the second phase. Effects of the second phase on the microstructure, interface bonding strength and ablation resistance of HfC coating were researched. The structure of HfC-SiC coating was denser and smoother than that of HfC-TaC and HfC-ZrC coatings. The dense structure, high interface bonding strength and formation of continuous Hf-Si-O glassy film resulted in the better ablation resistance of HfC-SiC coating. During ablation, the HfC-TaC coating was oxidized to a stable Hf₆Ta₂O₁₇ glassy film, which could restrain the oxygen penetration. A porous HfO₂-ZrO₂ layer was generated on the HfC-ZrC coating after ablation, some HfO₂ and ZrO₂ particles may be flown away by the high-speed flame. So, the ablation resistance of HfC-ZrC coating was worse than the other two coatings.

Original language	English
Pages (from-to)	250-258
Number of pages	9
Journal	Surface and Coatings Technology
Volume	344
DOIs	https://doi.org/10.1016/j.surfcoat.2018.03.023
State	Published - 25 Jun 2018

Keywords

Ablation resistance
Bonding strength
HfC coating
Second phase
Supersonic atmospheric plasma spraying

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10.1016/j.surfcoat.2018.03.023

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title = "Effects of the second phase on the microstructure and ablation resistance of HfC coating on C/C composites",

abstract = "To improve the ablation resistance of HfC coating on carbon/carbon composites prepared by supersonic atmospheric plasma spraying, SiC, TaC and ZrC ceramics were added into HfC coating as the second phase. Effects of the second phase on the microstructure, interface bonding strength and ablation resistance of HfC coating were researched. The structure of HfC-SiC coating was denser and smoother than that of HfC-TaC and HfC-ZrC coatings. The dense structure, high interface bonding strength and formation of continuous Hf-Si-O glassy film resulted in the better ablation resistance of HfC-SiC coating. During ablation, the HfC-TaC coating was oxidized to a stable Hf6Ta2O17 glassy film, which could restrain the oxygen penetration. A porous HfO2-ZrO2 layer was generated on the HfC-ZrC coating after ablation, some HfO2 and ZrO2 particles may be flown away by the high-speed flame. So, the ablation resistance of HfC-ZrC coating was worse than the other two coatings.",

keywords = "Ablation resistance, Bonding strength, HfC coating, Second phase, Supersonic atmospheric plasma spraying",

author = "Jincui Ren and Yulei Zhang and Yanqin Fu and Pengfei Zhang and Song Tian and Leilei Zhang",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

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day = "25",

doi = "10.1016/j.surfcoat.2018.03.023",

language = "英语",

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TY - JOUR

T1 - Effects of the second phase on the microstructure and ablation resistance of HfC coating on C/C composites

AU - Ren, Jincui

AU - Zhang, Yulei

AU - Fu, Yanqin

AU - Zhang, Pengfei

AU - Tian, Song

AU - Zhang, Leilei

PY - 2018/6/25

Y1 - 2018/6/25

N2 - To improve the ablation resistance of HfC coating on carbon/carbon composites prepared by supersonic atmospheric plasma spraying, SiC, TaC and ZrC ceramics were added into HfC coating as the second phase. Effects of the second phase on the microstructure, interface bonding strength and ablation resistance of HfC coating were researched. The structure of HfC-SiC coating was denser and smoother than that of HfC-TaC and HfC-ZrC coatings. The dense structure, high interface bonding strength and formation of continuous Hf-Si-O glassy film resulted in the better ablation resistance of HfC-SiC coating. During ablation, the HfC-TaC coating was oxidized to a stable Hf6Ta2O17 glassy film, which could restrain the oxygen penetration. A porous HfO2-ZrO2 layer was generated on the HfC-ZrC coating after ablation, some HfO2 and ZrO2 particles may be flown away by the high-speed flame. So, the ablation resistance of HfC-ZrC coating was worse than the other two coatings.

AB - To improve the ablation resistance of HfC coating on carbon/carbon composites prepared by supersonic atmospheric plasma spraying, SiC, TaC and ZrC ceramics were added into HfC coating as the second phase. Effects of the second phase on the microstructure, interface bonding strength and ablation resistance of HfC coating were researched. The structure of HfC-SiC coating was denser and smoother than that of HfC-TaC and HfC-ZrC coatings. The dense structure, high interface bonding strength and formation of continuous Hf-Si-O glassy film resulted in the better ablation resistance of HfC-SiC coating. During ablation, the HfC-TaC coating was oxidized to a stable Hf6Ta2O17 glassy film, which could restrain the oxygen penetration. A porous HfO2-ZrO2 layer was generated on the HfC-ZrC coating after ablation, some HfO2 and ZrO2 particles may be flown away by the high-speed flame. So, the ablation resistance of HfC-ZrC coating was worse than the other two coatings.

KW - Ablation resistance

KW - Bonding strength

KW - HfC coating

KW - Second phase

KW - Supersonic atmospheric plasma spraying

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U2 - 10.1016/j.surfcoat.2018.03.023

DO - 10.1016/j.surfcoat.2018.03.023

M3 - 文章

AN - SCOPUS:85047249649

SN - 0257-8972

VL - 344

SP - 250

EP - 258

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

ER -

Effects of the second phase on the microstructure and ablation resistance of HfC coating on C/C composites

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Keywords

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