Promoting Yb₂Si₂O₇ environmental barrier coatings for service at 1425 °C

Lin Chen; Shu Wen Li; Chang Jiu Li; Guan Jun Yang

doi:10.1016/j.jeurceramsoc.2025.117200

Promoting Yb₂Si₂O₇ environmental barrier coatings for service at 1425 °C

Lin Chen
, Shu Wen Li
, Chang Jiu Li
, Guan Jun Yang

材料科学与工程学院

Xi'an Jiaotong University

科研成果: 期刊稿件 › 文章 › 同行评审

9 引用（Scopus）

摘要

Si-based environmental barrier coatings (EBCs) are indispensable for SiC composites. However, the service temperature of next-generation composites exceeds 1400 °C, leading to melting of the Si bond coat. To mitigate this issue, Yb₂Si₂O₇ (YbDS) and mullite/YbDS coatings without Si bond coat were proposed. The results indicate that YbDS coatings can survive for 150 h at 1425 °C, while mullite/YbDS coatings experienced significant spallation during this period. Both SiO₂ phase transition and interfacial holes cause spallation of the YbDS and mullite/YbDS coatings. This research provides valuable insights for designing next-generation EBCs.

源语言	英语
期刊论文编号	117200
期刊	Journal of the European Ceramic Society
卷	45
期	6
DOI	https://doi.org/10.1016/j.jeurceramsoc.2025.117200
出版状态	已出版 - 6月 2025

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10.1016/j.jeurceramsoc.2025.117200

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title = "Promoting Yb₂Si₂O₇ environmental barrier coatings for service at 1425 °C",

abstract = "Si-based environmental barrier coatings (EBCs) are indispensable for SiC composites. However, the service temperature of next-generation composites exceeds 1400 °C, leading to melting of the Si bond coat. To mitigate this issue, Yb2Si2O7 (YbDS) and mullite/YbDS coatings without Si bond coat were proposed. The results indicate that YbDS coatings can survive for 150 h at 1425 °C, while mullite/YbDS coatings experienced significant spallation during this period. Both SiO2 phase transition and interfacial holes cause spallation of the YbDS and mullite/YbDS coatings. This research provides valuable insights for designing next-generation EBCs.",

keywords = "Bond coat, Cracking, Environmental barrier coatings, Oxidation, Phase transition",

author = "Lin Chen and Li, \{Shu Wen\} and Li, \{Chang Jiu\} and Yang, \{Guan Jun\}",

note = "Publisher Copyright: {\textcopyright} 2025",

year = "2025",

month = jun,

doi = "10.1016/j.jeurceramsoc.2025.117200",

language = "英语",

volume = "45",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

publisher = "Elsevier B.V.",

number = "6",

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TY - JOUR

T1 - Promoting Yb₂Si₂O₇ environmental barrier coatings for service at 1425 °C

AU - Chen, Lin

AU - Li, Shu Wen

AU - Li, Chang Jiu

AU - Yang, Guan Jun

PY - 2025/6

Y1 - 2025/6

N2 - Si-based environmental barrier coatings (EBCs) are indispensable for SiC composites. However, the service temperature of next-generation composites exceeds 1400 °C, leading to melting of the Si bond coat. To mitigate this issue, Yb2Si2O7 (YbDS) and mullite/YbDS coatings without Si bond coat were proposed. The results indicate that YbDS coatings can survive for 150 h at 1425 °C, while mullite/YbDS coatings experienced significant spallation during this period. Both SiO2 phase transition and interfacial holes cause spallation of the YbDS and mullite/YbDS coatings. This research provides valuable insights for designing next-generation EBCs.

AB - Si-based environmental barrier coatings (EBCs) are indispensable for SiC composites. However, the service temperature of next-generation composites exceeds 1400 °C, leading to melting of the Si bond coat. To mitigate this issue, Yb2Si2O7 (YbDS) and mullite/YbDS coatings without Si bond coat were proposed. The results indicate that YbDS coatings can survive for 150 h at 1425 °C, while mullite/YbDS coatings experienced significant spallation during this period. Both SiO2 phase transition and interfacial holes cause spallation of the YbDS and mullite/YbDS coatings. This research provides valuable insights for designing next-generation EBCs.

KW - Bond coat

KW - Cracking

KW - Environmental barrier coatings

KW - Oxidation

KW - Phase transition

UR - https://www.scopus.com/pages/publications/85214324133

U2 - 10.1016/j.jeurceramsoc.2025.117200

DO - 10.1016/j.jeurceramsoc.2025.117200

M3 - 文章

AN - SCOPUS:85214324133

SN - 0955-2219

VL - 45

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 6

M1 - 117200

ER -

Promoting Yb₂Si₂O₇ environmental barrier coatings for service at 1425 °C

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