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Thermal, Mechanical and Molten Silicate Environmental Deposits Corrosion Resistance Properties of High-Entropy (Y0.2Gd0.2Dy0.2Ce0.2La0.2)TaO4 Ceramic Materials
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Ruida WANG1, 2, Shixian ZHAO2, Lei LI3, Liugang CHEN1, Yaochen SI2, Lingfeng LI2, Hongxia LI2, 3, Jing FENG4
Journal of the Chinese Ceramic Society | 2023, 51(12) : 3133 - 3143
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Journal of the Chinese Ceramic Society | 2023, 51(12): 3133-3143
• Research Articles •
Thermal, Mechanical and Molten Silicate Environmental Deposits Corrosion Resistance Properties of High-Entropy (Y0.2Gd0.2Dy0.2Ce0.2La0.2)TaO4 Ceramic Materials
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Ruida WANG1, 2, Shixian ZHAO2, Lei LI3, Liugang CHEN1, Yaochen SI2, Lingfeng LI2, Hongxia LI2, 3, Jing FENG4
Affiliations
  • 1.Henan Key Laboratory of High Temperature Functional Materials, School of Zhengzhou University Materials Science and Engineering, Zhengzhou University, Zhengzhou 10459, China
  • 2.State Key Laboratory of Advanced Refractories, Sinosteel Luoyang Institute of Refractories Research Co., Ltd., Luoyang 471039, Henan, China
  • 3.China Sinosteel Group Co., Ltd., Beijing 100080, China
  • 4.School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650000, China

    • WANG Ruida (1998-), male, Master candidate. E-mail:

About Author:

WANG Ruida (1998-), male, Master candidate. E-mail:

Published: 2023-09-13 doi: 10.14062/j.issn.0454-5648.20230476
Outline
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Novel high-temperature thermal barrier materials become the key materials for the development of new generation aeroengines. In this paper, a monoclinic high-entropy rare-earth tantalate material (Y0.2Gd0.2Dy0.2Ce0.2La0.2)TaO4[(5RE0.2)TaO4] was synthesized via solid-state reaction. The thermal, the mechanical and the molten silicate environmental deposits (CMAS) corrosion resistance were investigated. The results indicate that (5RE0.2)TaO4 exhibits a low thermal conductivity (i.e., 1.22 W·m-1·K-1, 600 ℃) and a high thermal expansion coefficient (i.e., 10.3×10-6 K-1, 1 200 ℃), Compared with YSZ material (i.e., 2.1-2.7 W·m-1·K-1, 100-900 ℃), the thermal conductivity is decreased by 42%. The fracture toughness reaches 2.8 MPa·m1/2, which is superior to most thermal barrier coating materials because of its unique ferroelastic toughening effect. The thickness and penetration depth of the (5RE0.2)TaO4 reaction layer are smaller than those of the YSZ material after being corroded by CMAS at 1 350 ℃ for different durations. This material is a developed thermal barrier coating material with a great application potential.

rare earth tantalate  /  high entropy ceramics  /  molten silicate environmental deposits corrosion resistance properties  /  thermal barrier coating
王瑞达, 赵世贤, 李磊, 陈留刚, 司瑶晨, 李凌锋, 李红霞, 冯晶. 高熵(Y0.2Gd0.2Dy0.2Ce0.2La0.2)TaO4陶瓷材料的热学、力学及抗熔融硅酸盐环境沉积物侵蚀性能. 硅酸盐学报, 2023 , 51 (12) : 3133 -3143 . DOI: 10.14062/j.issn.0454-5648.20230476
Ruida WANG, Shixian ZHAO, Lei LI, Liugang CHEN, Yaochen SI, Lingfeng LI, Hongxia LI, Jing FENG. Thermal, Mechanical and Molten Silicate Environmental Deposits Corrosion Resistance Properties of High-Entropy (Y0.2Gd0.2Dy0.2Ce0.2La0.2)TaO4 Ceramic Materials[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (12) : 3133 -3143 . DOI: 10.14062/j.issn.0454-5648.20230476
Appendix
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Year 2023 volume 51 Issue 12
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Article Info
doi: 10.14062/j.issn.0454-5648.20230476
  • Receive Date：2023-07-06
  • Online Date：2026-10-19
  • Published：2023-09-13
Article Data
Affiliations
History
  • Received：2023-07-06
  • Revised：2023-07-28
Funding
Affiliations
    1.Henan Key Laboratory of High Temperature Functional Materials, School of Zhengzhou University Materials Science and Engineering, Zhengzhou University, Zhengzhou 10459, China
    2.State Key Laboratory of Advanced Refractories, Sinosteel Luoyang Institute of Refractories Research Co., Ltd., Luoyang 471039, Henan, China
    3.China Sinosteel Group Co., Ltd., Beijing 100080, China
    4.School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650000, China

Corresponding:

ZHAO Shixian (1981-), male, Ph.D., Senior Engineer; E-mail:
CHEN Liugang (1988-), male, Ph.D., Associate Professor.
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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