Preparation and Thermophysical Properties of (Sm0.2Gd0.2Dy0.2Y0.2Yb0.2)3TaO7 High-entropy Ceramic

doi:10.15541/jim20200489

Abstract

Abstract:

Developing novel ceramic materials with excellent thermophysical properties is one of the hotspots in the field of thermal barrier coatings. The (Sm_0.2Gd_0.2Dy_0.2Y_0.2Yb_0.2)₃TaO₇ high-entropy ceramic was fabricated via high-temperature solid-state reaction. The crystal structure, microstructure, phase stability and thermophysical properties were investigated. Results indicate that (Sm_0.2Gd_0.2Dy_0.2Y_0.2Yb_0.2)₃TaO₇high-entropy ceramic has single defective fluorite structure, its elements are homogenously distributed, its grain size ranges from 0.2 to 3 μm. After high-temperature thermal cycling, the sample still remains single fluorite structure, showing excelleent phase stability at high temperature. Thermal conductivity lies in the range of 0.72-0.74 W/(m·K), lower than that of 7YSZ. Thermal expansion coefficient at 1200 ℃ is 5.6×10^-6 K^-1, lower than requirement of thermal barrier coatings (TBCs) for surface ceramic layer. However, its thermal expansion coefficient is close to that of the silicon-based ceramics substrate of environmental barrier coatings (EBCs) ((3.4-5.5)×10^-6 K^-1).

Key words: high-entropy ceramic, thermal-barrier coating, thermal conductivity, thermal expansion coefficient

CLC Number:

TQ174

SANG Weiwei, ZHANG Hongsong, CHEN Huahui, WEN Bin, LI Xinchun. Preparation and Thermophysical Properties of (Sm_0.2Gd_0.2Dy_0.2Y_0.2Yb_0.2)₃TaO₇High-entropy Ceramic[J]. Journal of Inorganic Materials, 2021, 36(4): 405-410.

Figures/Tables 6

Fig. 1 XRD patterns of (Sm0.2Gd0.2Dy0.2Y0.2Yb0.2)3TaO7

Fig. 2 Raman spectra of (Sm0.2Gd0.2Dy0.2Y0.2Yb0.2)3TaO7

Fig. 3 SEM image and EDS mappings of (Sm0.2Gd0.2Dy0.2- Y0.2Yb0.2)3TaO7

Fig. 4 DSC and TGA curves of (Sm0.2Gd0.2Dy0.2Y0.2Yb0.2)3TaO7

Fig. 5 Comparison of XRD patterns and Raman spectra of (Sm0.2Gd0.2 Dy0.2 Y0.2Yb0.2)3TaO7 before and after thermal cycling

Fig. 6 Thermophysical properties of (Sm0.2Gd0.2Dy0.2Y0.2Yb0.2)3TaO7 (a) Specific heat capacity; (b) Thermal diffusivity; (c) Thermal conductivity; (d) Thermal expansion coefficient

References 27

[1]	KUMAR V, BALASUBRAMANIAN K. Progress update on failure mechanisms of advanced thermal barrier coatings: a review. Progress in Organic Coatings, 2016,90:54-82.
[2]	DAROLIA R. Thermal barrier coatings technology: critical review, progress update, remaining challenges and prospects. International Materials Reviews, 2013,58(6):315-348.
[3]	CHENG XIAO-GE, ZHANG HONG-SONG, LIU YAN-XU, et al. Thermal properties of RE₂AlTaO₇ (RE=Gd and Yb) oxide. Ceramics International, 2018,44(9):10762-10765.
[4]	LI CHUANG, ZHANG YI, HU DING-YU, et al. Effects of thermal barrier ceramic coating materials on diesel engine piston. Surface Technology, 2017,46(2):149-153.
[5]	LIU QIAO-MU, HUANG SHUN-ZHOU, HE AI-JIE, et al. Composite ceramics thermal barrier coatings of yttria stabilized zirconia for aero-engines. Journal of Materials Science & Technology, 2019,35(12):2814-2823.
[6]	LI GUANG-RONG, XIE HUA, YAN GGUAN-JUN, et al. A comprehensive sintering mechanism for TBCs- part II: multiscale multipoint interconnection-enhanced initial kinetics. Journal of the American Ceramic Society, 2017,100(9):4240-4251.
[7]	ZHANG HONG-SONG, TONG YU-PING, YANG XIAN-FENG, et al. Synthesis and thermophysical performances of complex Ca₃Ln₃ Ti₇Ta₂O_26.5 (Ln=Dy and Er) oxide. Ceramics International, 2020,46(3):2862-2867.
[8]	LIU ZHOU-YANG, YU JIN-XIN, LI QIANG. Finite element sim- ulation of ceramic layer/TGO interfacial crack on thermal barrier coating. Surface technology, 2017,46(7):70-76.
[9]	ZHANG HAO-MING, YAN FENG, CHEN XIAO-GE, et al. Thermal properties of La₃TaO₇ and La₂AlTaO₇ oxides. Ceramics International, 2017,43(1):755-759.
[10]	WANG SHI-MIN, LI BIN, SUN DE-BING, et al. Thermal and mechanical performances of Nd₂LaTaO₇ oxide. Ceramics International, 2019,45(8):10718-10721.
[11]	CHEN XIAO-GE, TANG AN, ZHANG HONG-SONG, et al. Thermal conductivity and expansion coefficient of Ln₂LaTaO₇ (Ln=Er and Yb) oxides for thermal barrier coating applications. Ceramics International, 2016,42(12):13491-13496.
[12]	WU FU-SHUO, WU PENG, CHEN LIN, et al. Structure and thermal properties of Al₂O₃-doped Gd₃TaO₇ as potential thermal barrier coating. Journal of the European Ceramic Society, 2019,39(6):2210-2214.
[13]	CHEN LIN, WU PENG, SONG PENG, et al. Synthesis, crystal structure and thermophysical properties of (La_1-xEu_x)₃TaO₇ ceramics. Ceramics International, 2018,44(14):16273-16281.
[14]	CHEN LIN, WU PENG, FENG JING. Optimization thermophysical properties of TiO₂ alloying Sm₃TaO₇ ceramics as promising thermal barrier coatings. International Journal of Applied Ceramic Technology, 2019,16(1):230-242.
[15]	ROST C M, SACHET E, BORMAN T, et al. Entropy-stabilized oxides. Nature Communications, 2015,6(1):8485-8485.
[16]	YEH JIEN-WEI, CHANG SHOU-YI, HONG YU-DER, et al. Anomalous decrease in X-ray diffraction intensities of Cu-Ni-Al-Co- Cr-Fe-Si alloy systems with multi-principal elements. Materials Chemistry and Physics, 2007,103(1):41-46.
[17]	ZHAO ZI-FAN, XIANG HUI-MIN, PENG ZHI-JIAN, et al. (La_0.2Ce_0.2Nd_0.2Sm_0.2Eu_0.2)₂Zr₂O₇: a novel high-entropy ceramic with low thermal conductivity and sluggish grain growth rate. Journal of Materials Science & Technology, 2019,35(11):2647-2651.
[18]	ZHAO ZI-FAN, XIANG HUI-MIN, DAI FU-ZHI, et al. (La_0.2 - Ce_0.2Nd_0.2Sm_0.2Eu_0.2)₂PO₄: a high entropy rare-earth phosphate monazite ceramic with low thermal conductivity and good compatibility with Al₂O₃ . Journal of Materials Science & Technology, 2019,35(12):2892-2896.
[19]	LI FEI, ZHOU LIN, LIU JI-XUAN, et al. High-entropy pyrochlores with low thermal conductivity for thermal barrier coating materials. Journal of Advanced Ceramics, 2019,8(4):576-582.
[20]	REN XIAO-MIN, TIAN ZHI-LIN, ZHANG JIE, et al. Equiatomic quaternary (Y_1/4Ho_1/4Er_1/4Yb_1/4)2SiO₅ silicate: a perspective multifunctional thermal and environmental barrier coating material. Scripta Materialia, 2019,168(15):47-50.
[21]	REN KE, WANG QIAN-KUN, SHAO GANG, et al. Multicomponent high-entropy zirconates with comprehensive properties for advanced thermal barrier coating. Scripta Materialia, 2020,178(15):382-386.
[22]	ZHAO ZI-FAN, CHEN HENG, XIANG HUI-MIN, et al. High entropy defective fluorite structured rare-earth niobates and tantalates for thermal barrier applications. Journal of Advanced Ceramics, 2020,9(3):303-311.
[23]	WANG CHANG-AN, LU HAO-RAN, HUANG ZE-YA, et al. Enhanced anti-deliquescent property and ultralow thermal conductivity of magnetoplumbite-type LnMeAl₁₁O₁₉ materials for thermal barrier coating. Journal of the American Ceramic Society, 2018,101(3):1095-1104. DOI URL
[24]	GU JUN-FENG, ZOU JI, ZHANG FAN, et al. Research progress in high entropy ceramic materials. Materials China, 2019,38(9):855-865, 886.
[25]	WU JIE, WEI XUE-ZHENG, PADTURE N P, et al. Low-thermal conductivity rare earth zirconates for potential thermal barrier coating applications. Journal of the American Ceramic Society, 2002,85(12):3031-3035. DOI URL
[26]	SANG WEI-WEI, YANG SHU-SEN, KANG YU, et al. Numerical simulation of thermal shock stress of Sm₂Ce₂O₇ thermal barrier coatings with different matrix materials. China Ceramics, 2020,56(2):45-51.
[27]	ARAI Y, INOUE R. Detection of small delamination in mullite/ Si/SiC model EBC system by pulse thermography. Journal of Advanced Ceramics, 2019,8(3):438-447.

Preparation and Thermophysical Properties of (Sm_0.2Gd_0.2Dy_0.2Y_0.2Yb_0.2)₃TaO₇High-entropy Ceramic

RichHTML

PDF (PC)

Knowledge

Cited

Abstract

Cite this article

share this article

Figures/Tables 6

References 27

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	WANG Weiwei, CAO Xin, LIU Junfei, YANG Xiaofei, HAN Na, LI Xingcong, SHI Lifen. Effect of Al₂O₃/P₂O₅ Molar Ratio on Structure and Properties of Sealing Glass for Power Lithium Batteries [J]. Journal of Inorganic Materials, 2026, 41(5): 611-618.
[2]	XIE Chenyi, MIAO Huaming, ZHANG Weiran, LIU Rongjun, WANG Yanfei, LI Duan. Research Progress on Theoretical Calculation in the Field of High-entropy Ceramics [J]. Journal of Inorganic Materials, 2026, 41(5): 545-560.
[3]	FAN Wenkai, YANG Xiao, LI Honghua, LI Yong, LI Jiangtao. Pressureless Sintering of (Y_0.2Gd_0.2Er_0.2Yb_0.2Lu_0.2)₂Zr₂O₇ High-entropy Ceramic and Its High Temperature CMAS Corrosion Resistance [J]. Journal of Inorganic Materials, 2025, 40(2): 159-167.
[4]	ZHANG Haifeng, JIANG Meng, SUN Tingting, WANG Lianjun, JIANG Wan. Preparation of p-type GeMnTe₂Based Thermoelectric Materials with Stable Cubic Phase [J]. Journal of Inorganic Materials, 2025, 40(11): 1245-1251.
[5]	WANG Weiming, WANG Weide, SU Yi, MA Qingsong, YAO Dongxu, ZENG Yuping. Research Progress of High Thermal Conductivity Silicon Nitride Ceramics Prepared by Non-oxide Sintering Additives [J]. Journal of Inorganic Materials, 2024, 39(6): 634-646.
[6]	JIN Min, MA Yupeng, WEI Tianran, LIN Siqi, BAI Xudong, SHI Xun, LIU Xuechao. Growth and Characterization of Large-size InSe Crystal from Non-stoichiometric Solution via a Zone Melting Method [J]. Journal of Inorganic Materials, 2024, 39(5): 554-560.
[7]	GUO Lingxiang, TANG Ying, HUANG Shiwei, XIAO Bolan, XIA Donghao, SUN Jia. Ablation Resistance of High-entropy Oxide Coatings on C/C Composites [J]. Journal of Inorganic Materials, 2024, 39(1): 61-70.
[8]	WANG Shuling, JIANG Meng, WANG Lianjun, JIANG Wan. n-Type Pb-free AgBiSe₂ Based Thermoelectric Materials with Stable Cubic Phase Structure [J]. Journal of Inorganic Materials, 2023, 38(7): 807-814.
[9]	CHEN Qiang, BAI Shuxin, YE Yicong. Highly Thermal Conductive Silicon Carbide Ceramics Matrix Composites for Thermal Management: a Review [J]. Journal of Inorganic Materials, 2023, 38(6): 634-646.
[10]	ZHANG Shuo, FU Qiangang, ZHANG Pei, FEI Jie, LI Wei. Influence of High Temperature Treatment of C/C Porous Preform on Friction and Wear Behavior of C/C-SiC Composites [J]. Journal of Inorganic Materials, 2023, 38(5): 561-568.
[11]	FU Shi, YANG Zengchao, LI Jiangtao. Progress of High Strength and High Thermal Conductivity Si₃N₄ Ceramics for Power Module Packaging [J]. Journal of Inorganic Materials, 2023, 38(10): 1117-1132.
[12]	SUN Xiaofan, CHEN Xiaowu, JIN Xihai, KAN Yanmei, HU Jianbao, DONG Shaoming. Fabrication and Properties of AlN-SiC Multiphase Ceramics via Low Temperature Reactive Melt Infiltration [J]. Journal of Inorganic Materials, 2023, 38(10): 1223-1229.
[13]	FU Shi, YANG Zengchao, LI Honghua, WANG Liang, LI Jiangtao. Mechanical Properties and Thermal Conductivity of Si₃N₄ Ceramics with Composite Sintering Additives [J]. Journal of Inorganic Materials, 2022, 37(9): 947-953.
[14]	HU Jiajun, WANG Kai, HOU Xinguang, YANG Ting, XIA Hongyan. Boron Phosphide with High Thermal Conductivity: Synthesis by Molten Salt Method and Thermal Management Performance [J]. Journal of Inorganic Materials, 2022, 37(9): 933-940.
[15]	WANG Pengjiang, KANG Huijun, YANG Xiong, LIU Ying, CHENG Cheng, WANG Tongmin. Inhibition of Lattice Thermal Conductivity of ZrNiSn-based Half-Heusler Thermoelectric Materials by Entropy Adjustment [J]. Journal of Inorganic Materials, 2022, 37(7): 717-723.