稀土钽酸盐(RETaO4)高熵陶瓷的制备与热学性能研究

Jiatong Zhu; Zhihao Lou; Ping Zhang; Jia Zhao; Xuanyu Meng; Jie Xu; Feng Gao

doi:10.15541/jim20200426

稀土钽酸盐(RETaO₄)高熵陶瓷的制备与热学性能研究

Jiatong Zhu, Zhihao Lou, Ping Zhang, Jia Zhao, Xuanyu Meng, Jie Xu, Feng Gao

材料学院

Northwestern Polytechnical University Xian

科研成果: 期刊稿件 › 文章 › 同行评审

35 引用（Scopus）

摘要

Single-phase solid solution monoclinic structure high-entropy tantalates (Nd_1/6Sm_1/6Eu_1/6Gd_1/6Dy_1/6Ho_1/6) TaO₄(6RETaO₄), (Nd_1/5Sm_1/5Eu_1/5Gd_1/5Dy_1/5)TaO₄(5RETaO₄), (Nd_1/4Sm_1/4Eu_1/4Gd_1/4)TaO₄(4RETaO₄) were prepared by solid state method. STEM-EDS result shows the rare earth elements are uniformly distributed without segregation. The ferroelastic domain observed through SEM derived from the second ferroelastic phase transition. The thermal expansion experiment suggests the good thermal stability below 1200℃, where the thermal expansion coefficient of 6RETaO₄ reaches 9.25×10^-6 K^-1 at 1200℃. Due to the increase of phonon scattering derived from high-entropy effect, RETaO₄ ceramics exhibit lower intrinsic thermal conductivity (2.98-1.23 W•m^-1•K^-1, 100-1000℃) and enhanced mechanical properties (6RETaO₄, (9.97±2.2) GPa), which indicates that it is a potential material for thermal barrier coatings.

投稿的翻译标题	Preparation and Thermal Properties of Rare Earth Tantalates (RETaO₄) High-entropy Ceramics
源语言	繁体中文
页（从-至）	411-417
页数	7
期刊	Wuji Cailiao Xuebao/Journal of Inorganic Materials
卷	36
期	4
DOI	https://doi.org/10.15541/jim20200426
出版状态	已出版 - 4月 2021

关键词

High-entropy ceramics
Rare earth tantalate
Thermal barrier coating
Thermal property

访问文件

10.15541/jim20200426

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链接到 Scopus 的出版物

引用此

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title = "稀土钽酸盐(RETaO4)高熵陶瓷的制备与热学性能研究",

abstract = "Single-phase solid solution monoclinic structure high-entropy tantalates (Nd1/6Sm1/6Eu1/6Gd1/6Dy1/6Ho1/6) TaO4(6RETaO4), (Nd1/5Sm1/5Eu1/5Gd1/5Dy1/5)TaO4(5RETaO4), (Nd1/4Sm1/4Eu1/4Gd1/4)TaO4(4RETaO4) were prepared by solid state method. STEM-EDS result shows the rare earth elements are uniformly distributed without segregation. The ferroelastic domain observed through SEM derived from the second ferroelastic phase transition. The thermal expansion experiment suggests the good thermal stability below 1200℃, where the thermal expansion coefficient of 6RETaO4 reaches 9.25×10-6 K-1 at 1200℃. Due to the increase of phonon scattering derived from high-entropy effect, RETaO4 ceramics exhibit lower intrinsic thermal conductivity (2.98-1.23 W•m-1•K-1, 100-1000℃) and enhanced mechanical properties (6RETaO4, (9.97±2.2) GPa), which indicates that it is a potential material for thermal barrier coatings.",

keywords = "High-entropy ceramics, Rare earth tantalate, Thermal barrier coating, Thermal property",

author = "Jiatong Zhu and Zhihao Lou and Ping Zhang and Jia Zhao and Xuanyu Meng and Jie Xu and Feng Gao",

year = "2021",

month = apr,

doi = "10.15541/jim20200426",

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volume = "36",

pages = "411--417",

journal = "Wuji Cailiao Xuebao/Journal of Inorganic Materials",

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number = "4",

}

TY - JOUR

T1 - 稀土钽酸盐(RETaO4)高熵陶瓷的制备与热学性能研究

AU - Zhu, Jiatong

AU - Lou, Zhihao

AU - Zhang, Ping

AU - Zhao, Jia

AU - Meng, Xuanyu

AU - Xu, Jie

AU - Gao, Feng

PY - 2021/4

Y1 - 2021/4

N2 - Single-phase solid solution monoclinic structure high-entropy tantalates (Nd1/6Sm1/6Eu1/6Gd1/6Dy1/6Ho1/6) TaO4(6RETaO4), (Nd1/5Sm1/5Eu1/5Gd1/5Dy1/5)TaO4(5RETaO4), (Nd1/4Sm1/4Eu1/4Gd1/4)TaO4(4RETaO4) were prepared by solid state method. STEM-EDS result shows the rare earth elements are uniformly distributed without segregation. The ferroelastic domain observed through SEM derived from the second ferroelastic phase transition. The thermal expansion experiment suggests the good thermal stability below 1200℃, where the thermal expansion coefficient of 6RETaO4 reaches 9.25×10-6 K-1 at 1200℃. Due to the increase of phonon scattering derived from high-entropy effect, RETaO4 ceramics exhibit lower intrinsic thermal conductivity (2.98-1.23 W•m-1•K-1, 100-1000℃) and enhanced mechanical properties (6RETaO4, (9.97±2.2) GPa), which indicates that it is a potential material for thermal barrier coatings.

AB - Single-phase solid solution monoclinic structure high-entropy tantalates (Nd1/6Sm1/6Eu1/6Gd1/6Dy1/6Ho1/6) TaO4(6RETaO4), (Nd1/5Sm1/5Eu1/5Gd1/5Dy1/5)TaO4(5RETaO4), (Nd1/4Sm1/4Eu1/4Gd1/4)TaO4(4RETaO4) were prepared by solid state method. STEM-EDS result shows the rare earth elements are uniformly distributed without segregation. The ferroelastic domain observed through SEM derived from the second ferroelastic phase transition. The thermal expansion experiment suggests the good thermal stability below 1200℃, where the thermal expansion coefficient of 6RETaO4 reaches 9.25×10-6 K-1 at 1200℃. Due to the increase of phonon scattering derived from high-entropy effect, RETaO4 ceramics exhibit lower intrinsic thermal conductivity (2.98-1.23 W•m-1•K-1, 100-1000℃) and enhanced mechanical properties (6RETaO4, (9.97±2.2) GPa), which indicates that it is a potential material for thermal barrier coatings.

KW - High-entropy ceramics

KW - Rare earth tantalate

KW - Thermal barrier coating

KW - Thermal property

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DO - 10.15541/jim20200426

M3 - 文章

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稀土钽酸盐(RETaO4)高熵陶瓷的制备与热学性能研究

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关键词

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引用此

稀土钽酸盐(RETaO₄)高熵陶瓷的制备与热学性能研究