Nanosized (Zr, Hf)O2 coating reinforced by AlN whiskers for the ablation protection of SiC coated C/C composites

Yulan Yu; Guanghui Feng; Yujun Jia; Hejun Li

doi:10.1016/j.jeurceramsoc.2023.02.066

Nanosized (Zr_, Hf)O₂ coating reinforced by AlN whiskers for the ablation protection of SiC coated C/C composites

Yulan Yu
, Guanghui Feng
, Yujun Jia
, Hejun Li

School of Materials Sience and Engineering

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

16 Scopus citations

Abstract

In this work, AlN whisker-reinforced (Zr, Hf)O₂ coating was prepared on SiC coated carbon/carbon composites by sol-gel and plasma spraying methods. Its cyclic ablation resistance was evaluated using an oxyacetylene torch with a heat flux of 2.38 MW/m². After ablation, the coating showed apparently decreased crack sizes and quantity as compared with the one without AlN whisker addition, pointing out its better crack tolerance. Moreover, the coating had a thinner oxidized region based on the linear ablation rate (−0.042 µm/s), greatly lower than that of pure oxide coating (−0.922 µm/s). After detailed observation and characterization, probable protection mechanism was proposed.

Original language	English
Pages (from-to)	3959-3968
Number of pages	10
Journal	Journal of the European Ceramic Society
Volume	43
Issue number	9
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2023.02.066
State	Published - Aug 2023

Keywords

(Zr, Hf)O coating
AlN whiskers
C/C composites
Cyclic ablation

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10.1016/j.jeurceramsoc.2023.02.066

Cite this

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title = "Nanosized (Zr, Hf)O2 coating reinforced by AlN whiskers for the ablation protection of SiC coated C/C composites",

abstract = "In this work, AlN whisker-reinforced (Zr, Hf)O2 coating was prepared on SiC coated carbon/carbon composites by sol-gel and plasma spraying methods. Its cyclic ablation resistance was evaluated using an oxyacetylene torch with a heat flux of 2.38 MW/m2. After ablation, the coating showed apparently decreased crack sizes and quantity as compared with the one without AlN whisker addition, pointing out its better crack tolerance. Moreover, the coating had a thinner oxidized region based on the linear ablation rate (−0.042 µm/s), greatly lower than that of pure oxide coating (−0.922 µm/s). After detailed observation and characterization, probable protection mechanism was proposed.",

keywords = "(Zr, Hf)O coating, AlN whiskers, C/C composites, Cyclic ablation",

author = "Yulan Yu and Guanghui Feng and Yujun Jia and Hejun Li",

note = "Publisher Copyright: {\textcopyright} 2023",

year = "2023",

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doi = "10.1016/j.jeurceramsoc.2023.02.066",

language = "英语",

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TY - JOUR

T1 - Nanosized (Zr, Hf)O2 coating reinforced by AlN whiskers for the ablation protection of SiC coated C/C composites

AU - Yu, Yulan

AU - Feng, Guanghui

AU - Jia, Yujun

AU - Li, Hejun

PY - 2023/8

Y1 - 2023/8

N2 - In this work, AlN whisker-reinforced (Zr, Hf)O2 coating was prepared on SiC coated carbon/carbon composites by sol-gel and plasma spraying methods. Its cyclic ablation resistance was evaluated using an oxyacetylene torch with a heat flux of 2.38 MW/m2. After ablation, the coating showed apparently decreased crack sizes and quantity as compared with the one without AlN whisker addition, pointing out its better crack tolerance. Moreover, the coating had a thinner oxidized region based on the linear ablation rate (−0.042 µm/s), greatly lower than that of pure oxide coating (−0.922 µm/s). After detailed observation and characterization, probable protection mechanism was proposed.

AB - In this work, AlN whisker-reinforced (Zr, Hf)O2 coating was prepared on SiC coated carbon/carbon composites by sol-gel and plasma spraying methods. Its cyclic ablation resistance was evaluated using an oxyacetylene torch with a heat flux of 2.38 MW/m2. After ablation, the coating showed apparently decreased crack sizes and quantity as compared with the one without AlN whisker addition, pointing out its better crack tolerance. Moreover, the coating had a thinner oxidized region based on the linear ablation rate (−0.042 µm/s), greatly lower than that of pure oxide coating (−0.922 µm/s). After detailed observation and characterization, probable protection mechanism was proposed.

KW - (Zr, Hf)O coating

KW - AlN whiskers

KW - C/C composites

KW - Cyclic ablation

UR - https://www.scopus.com/pages/publications/85149777683

U2 - 10.1016/j.jeurceramsoc.2023.02.066

DO - 10.1016/j.jeurceramsoc.2023.02.066

M3 - 文章

AN - SCOPUS:85149777683

SN - 0955-2219

VL - 43

SP - 3959

EP - 3968

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 9

ER -

Nanosized (Zr_, Hf)O₂ coating reinforced by AlN whiskers for the ablation protection of SiC coated C/C composites

Abstract

Keywords

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