A promising (Yb0.2Tm0.2Lu0.2Sc0.2Er0.2)2Si2O7 with excellent thermophysical properties for thermal environmental barrier coatings material

Fushuang Wei; Luwei Deng; Yong Liu; Dongxing Zhang; Xiaodong Zhang; You Wang

doi:10.1016/j.jallcom.2024.174820

A promising (Yb_0.2Tm_0.2Lu_0.2Sc_0.2Er_0.2)₂Si₂O₇ with excellent thermophysical properties for thermal environmental barrier coatings material

Fushuang Wei, Luwei Deng, Yong Liu, Dongxing Zhang, Xiaodong Zhang^*, You Wang

^*Corresponding author for this work

Harbin Institute of Technology

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

3 Citations (Scopus)

Abstract

Aiming at the development of thermal environmental barrier coatings (TEBCs) material, the factor of grain size is introduced into the high-entropy rare-earth disilicate for the first time. The (Yb_0.2Tm_0.2Lu_0.2Sc_0.2Er_0.2)₂Si₂O₇ with smaller grain size was prepared by one-step pressureless sintering method. Results of thermal conductivity and coefficient of thermal expansion (CTE) reveal that thermal conductivity of (Yb_0.2Tm_0.2Lu_0.2Sc_0.2Er_0.2)₂Si₂O₇ bulk material is lower than that all existing EBCs and even most TBCs and potential TEBCs material, which is 0.686 W m⁻¹ °C⁻¹ at 1300 °C. Excellent thermophysical properties indicate that designed (Yb_0.2Tm_0.2Lu_0.2Sc_0.2Er_0.2)₂Si₂O₇ with small grain size can be used as a promising TEBCs material.

Original language	English
Article number	174820
Journal	Journal of Alloys and Compounds
Volume	997
DOIs	https://doi.org/10.1016/j.jallcom.2024.174820
Publication status	Published - 30 Aug 2024
Externally published	Yes

Keywords

Ceramic-matrix composites (CMCs)
Sintering
Thermal analysis
Thermal properties

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10.1016/j.jallcom.2024.174820

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@article{b700b6e54f8f482ba677373ebcd1b109,

title = "A promising (Yb0.2Tm0.2Lu0.2Sc0.2Er0.2)2Si2O7 with excellent thermophysical properties for thermal environmental barrier coatings material",

abstract = "Aiming at the development of thermal environmental barrier coatings (TEBCs) material, the factor of grain size is introduced into the high-entropy rare-earth disilicate for the first time. The (Yb0.2Tm0.2Lu0.2Sc0.2Er0.2)2Si2O7 with smaller grain size was prepared by one-step pressureless sintering method. Results of thermal conductivity and coefficient of thermal expansion (CTE) reveal that thermal conductivity of (Yb0.2Tm0.2Lu0.2Sc0.2Er0.2)2Si2O7 bulk material is lower than that all existing EBCs and even most TBCs and potential TEBCs material, which is 0.686 W m−1 °C−1 at 1300 °C. Excellent thermophysical properties indicate that designed (Yb0.2Tm0.2Lu0.2Sc0.2Er0.2)2Si2O7 with small grain size can be used as a promising TEBCs material.",

keywords = "Ceramic-matrix composites (CMCs), Sintering, Thermal analysis, Thermal properties",

author = "Fushuang Wei and Luwei Deng and Yong Liu and Dongxing Zhang and Xiaodong Zhang and You Wang",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier B.V.",

year = "2024",

month = aug,

day = "30",

doi = "10.1016/j.jallcom.2024.174820",

language = "English",

volume = "997",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - A promising (Yb0.2Tm0.2Lu0.2Sc0.2Er0.2)2Si2O7 with excellent thermophysical properties for thermal environmental barrier coatings material

AU - Wei, Fushuang

AU - Deng, Luwei

AU - Liu, Yong

AU - Zhang, Dongxing

AU - Zhang, Xiaodong

AU - Wang, You

PY - 2024/8/30

Y1 - 2024/8/30

N2 - Aiming at the development of thermal environmental barrier coatings (TEBCs) material, the factor of grain size is introduced into the high-entropy rare-earth disilicate for the first time. The (Yb0.2Tm0.2Lu0.2Sc0.2Er0.2)2Si2O7 with smaller grain size was prepared by one-step pressureless sintering method. Results of thermal conductivity and coefficient of thermal expansion (CTE) reveal that thermal conductivity of (Yb0.2Tm0.2Lu0.2Sc0.2Er0.2)2Si2O7 bulk material is lower than that all existing EBCs and even most TBCs and potential TEBCs material, which is 0.686 W m−1 °C−1 at 1300 °C. Excellent thermophysical properties indicate that designed (Yb0.2Tm0.2Lu0.2Sc0.2Er0.2)2Si2O7 with small grain size can be used as a promising TEBCs material.

AB - Aiming at the development of thermal environmental barrier coatings (TEBCs) material, the factor of grain size is introduced into the high-entropy rare-earth disilicate for the first time. The (Yb0.2Tm0.2Lu0.2Sc0.2Er0.2)2Si2O7 with smaller grain size was prepared by one-step pressureless sintering method. Results of thermal conductivity and coefficient of thermal expansion (CTE) reveal that thermal conductivity of (Yb0.2Tm0.2Lu0.2Sc0.2Er0.2)2Si2O7 bulk material is lower than that all existing EBCs and even most TBCs and potential TEBCs material, which is 0.686 W m−1 °C−1 at 1300 °C. Excellent thermophysical properties indicate that designed (Yb0.2Tm0.2Lu0.2Sc0.2Er0.2)2Si2O7 with small grain size can be used as a promising TEBCs material.

KW - Ceramic-matrix composites (CMCs)

KW - Sintering

KW - Thermal analysis

KW - Thermal properties

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U2 - 10.1016/j.jallcom.2024.174820

DO - 10.1016/j.jallcom.2024.174820

M3 - Article

AN - SCOPUS:85193466923

SN - 0925-8388

VL - 997

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 174820

ER -

A promising (Yb_0.2Tm_0.2Lu_0.2Sc_0.2Er_0.2)₂Si₂O₇ with excellent thermophysical properties for thermal environmental barrier coatings material

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