Ablation behavior of sharp leading edge parts made of rare earth La-compound modified ZrB2 coated C/C composites

Bo Li; Hejun Li; Xiyuan Yao; Yigao Chen; Xu Hu; Guanghui Feng; Jinhua Lu

doi:10.1016/j.corsci.2020.108895

Ablation behavior of sharp leading edge parts made of rare earth La-compound modified ZrB₂ coated C/C composites

Bo Li, Hejun Li, Xiyuan Yao, Yigao Chen, Xu Hu, Guanghui Feng, Jinhua Lu

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

31 Scopus citations

Abstract

LaB₆-ZrB₂ and La₂O₃-ZrB₂ coating were prepared on the sharp leading edge shaped C/C composites by supersonic atmosphere plasma spraying and their oxyacetylene ablation behavior were investigated. Results indicated that the oxide scale generated after ablation of LaB₆-ZrB₂ coating presented porous due to the excess B content, which decreased the compactness. For La₂O₃-ZrB₂ coating, La₂O₃ dissolved into ZrO₂by diffusion, forming a dense oxide scale containing La_0.1Zr_0.9O_1.95, which offered the best ablation protection. Moreover, the analysis of La₂O₃-ZrB₂ coating in combination with computational fluid dynamics simulation revealed the ablation behavior of different areas.

Original language	English
Article number	108895
Journal	Corrosion Science
Volume	175
DOIs	https://doi.org/10.1016/j.corsci.2020.108895
State	Published - Oct 2020

Keywords

Ablation
Carbon/carbon composites
Computational fluid dynamics
Rare earth
Sharp leading edge

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10.1016/j.corsci.2020.108895

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@article{10c345dc66114f4c8257048d05e90394,

title = "Ablation behavior of sharp leading edge parts made of rare earth La-compound modified ZrB2 coated C/C composites",

abstract = "LaB6-ZrB2 and La2O3-ZrB2 coating were prepared on the sharp leading edge shaped C/C composites by supersonic atmosphere plasma spraying and their oxyacetylene ablation behavior were investigated. Results indicated that the oxide scale generated after ablation of LaB6-ZrB2 coating presented porous due to the excess B content, which decreased the compactness. For La2O3-ZrB2 coating, La2O3 dissolved into ZrO2by diffusion, forming a dense oxide scale containing La0.1Zr0.9O1.95, which offered the best ablation protection. Moreover, the analysis of La2O3-ZrB2 coating in combination with computational fluid dynamics simulation revealed the ablation behavior of different areas.",

keywords = "Ablation, Carbon/carbon composites, Computational fluid dynamics, Rare earth, Sharp leading edge",

author = "Bo Li and Hejun Li and Xiyuan Yao and Yigao Chen and Xu Hu and Guanghui Feng and Jinhua Lu",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = oct,

doi = "10.1016/j.corsci.2020.108895",

language = "英语",

volume = "175",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Ablation behavior of sharp leading edge parts made of rare earth La-compound modified ZrB2 coated C/C composites

AU - Li, Bo

AU - Li, Hejun

AU - Yao, Xiyuan

AU - Chen, Yigao

AU - Hu, Xu

AU - Feng, Guanghui

AU - Lu, Jinhua

PY - 2020/10

Y1 - 2020/10

N2 - LaB6-ZrB2 and La2O3-ZrB2 coating were prepared on the sharp leading edge shaped C/C composites by supersonic atmosphere plasma spraying and their oxyacetylene ablation behavior were investigated. Results indicated that the oxide scale generated after ablation of LaB6-ZrB2 coating presented porous due to the excess B content, which decreased the compactness. For La2O3-ZrB2 coating, La2O3 dissolved into ZrO2by diffusion, forming a dense oxide scale containing La0.1Zr0.9O1.95, which offered the best ablation protection. Moreover, the analysis of La2O3-ZrB2 coating in combination with computational fluid dynamics simulation revealed the ablation behavior of different areas.

AB - LaB6-ZrB2 and La2O3-ZrB2 coating were prepared on the sharp leading edge shaped C/C composites by supersonic atmosphere plasma spraying and their oxyacetylene ablation behavior were investigated. Results indicated that the oxide scale generated after ablation of LaB6-ZrB2 coating presented porous due to the excess B content, which decreased the compactness. For La2O3-ZrB2 coating, La2O3 dissolved into ZrO2by diffusion, forming a dense oxide scale containing La0.1Zr0.9O1.95, which offered the best ablation protection. Moreover, the analysis of La2O3-ZrB2 coating in combination with computational fluid dynamics simulation revealed the ablation behavior of different areas.

KW - Ablation

KW - Carbon/carbon composites

KW - Computational fluid dynamics

KW - Rare earth

KW - Sharp leading edge

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DO - 10.1016/j.corsci.2020.108895

M3 - 文章

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SN - 0010-938X

VL - 175

JO - Corrosion Science

JF - Corrosion Science

M1 - 108895

ER -

Ablation behavior of sharp leading edge parts made of rare earth La-compound modified ZrB₂ coated C/C composites

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Keywords

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