A new high entropy rare earth disilicate ceramic (Lu1/8Yb1/8Sc1/8Er1/8Y1/8Ho1/8Dy1/8Tb1/8)2Si2O7: High temperature corrosion of water vapor and molten calcium–magnesium–aluminosilicate (CMAS)

Xu Wang; Feihan Xu; Mingyu Meng; Ling Liu; Xinchun Tian; Lihong Gao; Shizhen Zhu; Zhuang Ma

doi:10.1016/j.jallcom.2024.173687

A new high entropy rare earth disilicate ceramic (Lu_1/8Yb_1/8Sc_1/8Er_1/8Y_1/8Ho_1/8Dy_1/8Tb_1/8)₂Si₂O₇: High temperature corrosion of water vapor and molten calcium–magnesium–aluminosilicate (CMAS)

Xu Wang, Feihan Xu, Mingyu Meng, Ling Liu^*, Xinchun Tian, Lihong Gao, Shizhen Zhu, Zhuang Ma

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

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2 Citations (Scopus)

Abstract

A new β-(Lu_1/8Yb_1/8Sc_1/8Er_1/8Y_1/8Ho_1/8Dy_1/8Tb_1/8)₂Si₂O₇ ((8RE_1/8)₂Si₂O₇) disilicate was prepared using a solid reaction process to protect SiC_f/SiC CMC component materials. The thermal properties and corrosion resistance of (8RE_1/8)₂Si₂O₇ were systematically studied. Experimental results showed that (8RE_1/8)₂Si₂O₇ exhibited lower thermal conductivity than that of one-component silicate materials, only 1.80 (W•m⁻¹•K⁻¹) at 1000 °C. Meanwhile, (8RE_1/8)₂Si₂O₇ also exhibited superior water vapor and CMAS corrosion resistance. The weight loss was 1.05 × 10⁻⁴ g/cm² after 200 h corrosion at 1400 °C. When it interacted with CMAS at 1300 ℃ for 48 h, the reaction layer was only 16 µm. Therefore, (8RE_1/8)₂Si₂O₇ could be regarded as a remarkable candidate for T/EBC.

Original language	English
Article number	173687
Journal	Journal of Alloys and Compounds
Volume	983
DOIs	https://doi.org/10.1016/j.jallcom.2024.173687
Publication status	Published - 5 May 2024

Keywords

(LuYbScErYHoDyTb)SiO
CMAS corrosion
Thermal conductivity
Water vapor corrosion

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10.1016/j.jallcom.2024.173687

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Wang, X., Xu, F., Meng, M., Liu, L., Tian, X., Gao, L., Zhu, S., & Ma, Z. (2024). A new high entropy rare earth disilicate ceramic (Lu_1/8Yb_1/8Sc_1/8Er_1/8Y_1/8Ho_1/8Dy_1/8Tb_1/8)₂Si₂O₇: High temperature corrosion of water vapor and molten calcium–magnesium–aluminosilicate (CMAS). Journal of Alloys and Compounds, 983, Article 173687. https://doi.org/10.1016/j.jallcom.2024.173687

@article{a0f78fd603ff461aa18881bf743103a4,

title = "A new high entropy rare earth disilicate ceramic (Lu1/8Yb1/8Sc1/8Er1/8Y1/8Ho1/8Dy1/8Tb1/8)2Si2O7: High temperature corrosion of water vapor and molten calcium–magnesium–aluminosilicate (CMAS)",

abstract = "A new β-(Lu1/8Yb1/8Sc1/8Er1/8Y1/8Ho1/8Dy1/8Tb1/8)2Si2O7 ((8RE1/8)2Si2O7) disilicate was prepared using a solid reaction process to protect SiCf/SiC CMC component materials. The thermal properties and corrosion resistance of (8RE1/8)2Si2O7 were systematically studied. Experimental results showed that (8RE1/8)2Si2O7 exhibited lower thermal conductivity than that of one-component silicate materials, only 1.80 (W•m−1•K−1) at 1000 °C. Meanwhile, (8RE1/8)2Si2O7 also exhibited superior water vapor and CMAS corrosion resistance. The weight loss was 1.05 × 10−4 g/cm2 after 200 h corrosion at 1400 °C. When it interacted with CMAS at 1300 ℃ for 48 h, the reaction layer was only 16 µm. Therefore, (8RE1/8)2Si2O7 could be regarded as a remarkable candidate for T/EBC.",

keywords = "(LuYbScErYHoDyTb)SiO, CMAS corrosion, Thermal conductivity, Water vapor corrosion",

author = "Xu Wang and Feihan Xu and Mingyu Meng and Ling Liu and Xinchun Tian and Lihong Gao and Shizhen Zhu and Zhuang Ma",

note = "Publisher Copyright: {\textcopyright} 2024",

year = "2024",

month = may,

day = "5",

doi = "10.1016/j.jallcom.2024.173687",

language = "English",

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A new high entropy rare earth disilicate ceramic (Lu_1/8Yb_1/8Sc_1/8Er_1/8Y_1/8Ho_1/8Dy_1/8Tb_1/8)₂Si₂O₇: High temperature corrosion of water vapor and molten calcium–magnesium–aluminosilicate (CMAS). / Wang, Xu; Xu, Feihan; Meng, Mingyu et al.
In: Journal of Alloys and Compounds, Vol. 983, 173687, 05.05.2024.

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

TY - JOUR

T1 - A new high entropy rare earth disilicate ceramic (Lu1/8Yb1/8Sc1/8Er1/8Y1/8Ho1/8Dy1/8Tb1/8)2Si2O7

T2 - High temperature corrosion of water vapor and molten calcium–magnesium–aluminosilicate (CMAS)

AU - Wang, Xu

AU - Xu, Feihan

AU - Meng, Mingyu

AU - Liu, Ling

AU - Tian, Xinchun

AU - Gao, Lihong

AU - Zhu, Shizhen

AU - Ma, Zhuang

PY - 2024/5/5

Y1 - 2024/5/5

N2 - A new β-(Lu1/8Yb1/8Sc1/8Er1/8Y1/8Ho1/8Dy1/8Tb1/8)2Si2O7 ((8RE1/8)2Si2O7) disilicate was prepared using a solid reaction process to protect SiCf/SiC CMC component materials. The thermal properties and corrosion resistance of (8RE1/8)2Si2O7 were systematically studied. Experimental results showed that (8RE1/8)2Si2O7 exhibited lower thermal conductivity than that of one-component silicate materials, only 1.80 (W•m−1•K−1) at 1000 °C. Meanwhile, (8RE1/8)2Si2O7 also exhibited superior water vapor and CMAS corrosion resistance. The weight loss was 1.05 × 10−4 g/cm2 after 200 h corrosion at 1400 °C. When it interacted with CMAS at 1300 ℃ for 48 h, the reaction layer was only 16 µm. Therefore, (8RE1/8)2Si2O7 could be regarded as a remarkable candidate for T/EBC.

AB - A new β-(Lu1/8Yb1/8Sc1/8Er1/8Y1/8Ho1/8Dy1/8Tb1/8)2Si2O7 ((8RE1/8)2Si2O7) disilicate was prepared using a solid reaction process to protect SiCf/SiC CMC component materials. The thermal properties and corrosion resistance of (8RE1/8)2Si2O7 were systematically studied. Experimental results showed that (8RE1/8)2Si2O7 exhibited lower thermal conductivity than that of one-component silicate materials, only 1.80 (W•m−1•K−1) at 1000 °C. Meanwhile, (8RE1/8)2Si2O7 also exhibited superior water vapor and CMAS corrosion resistance. The weight loss was 1.05 × 10−4 g/cm2 after 200 h corrosion at 1400 °C. When it interacted with CMAS at 1300 ℃ for 48 h, the reaction layer was only 16 µm. Therefore, (8RE1/8)2Si2O7 could be regarded as a remarkable candidate for T/EBC.

KW - (LuYbScErYHoDyTb)SiO

KW - CMAS corrosion

KW - Thermal conductivity

KW - Water vapor corrosion

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U2 - 10.1016/j.jallcom.2024.173687

DO - 10.1016/j.jallcom.2024.173687

M3 - Article

AN - SCOPUS:85185538218

SN - 0925-8388

VL - 983

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 173687

ER -

A new high entropy rare earth disilicate ceramic (Lu_1/8Yb_1/8Sc_1/8Er_1/8Y_1/8Ho_1/8Dy_1/8Tb_1/8)₂Si₂O₇: High temperature corrosion of water vapor and molten calcium–magnesium–aluminosilicate (CMAS)

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