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High-entropy rare earth zirconate ceramic coating with low thermal conductivity and high wear resistance and preparation method of high-entropy rare earth zirconate ceramic coating
The invention relates to a high-entropy rare earth zirconate ceramic coating with low thermal conductivity and high wear resistance and a preparation method thereof, the coating is of a defective fluorite structure, the chemical structural formula of the coating is (Sm < 0.2 > Gd < 0.2 > Y < 0.2 > Er < 0.2 > Yb < 0.2 >) 2Zr2O7, and the high-entropy rare earth zirconate ceramic coating has good high-temperature stability and low thermal conductivity. The (Sm0. 2Gd0. 2Y0. 2Er0. 2Yb0. 2) 2Zr2O7 high-entropy ceramic coating prepared through atmospheric plasma spraying is of a layered structure, air holes exist in the surface, the heat conductivity of the coating can be reduced, all elements in the coating are evenly distributed, and the element segregation phenomenon does not occur. The high-entropy ceramic coating has excellent heat insulation and wear resistance, and is of great significance in promoting research of thermal barrier coating materials and application of thermal barrier coating technologies.
本发明涉及一种具有低热导率和高耐磨性的高熵稀土锆酸盐陶瓷涂层及其制备方法，该涂层为缺陷萤石结构，其化学结构式为(Sm0.2Gd0.2Y0.2Er0.2Yb0.2)2Zr2O7，具有良好的高温稳定性和较低的热导率。采用大气等离子喷涂制备(Sm0.2Gd0.2Y0.2Er0.2Yb0.2)2Zr2O7高熵陶瓷涂层为层状结构，表面存在气孔，有利于降低涂层的热导率，涂层中各元素分布均匀，没有出现元素偏析现象。该高熵陶瓷涂层具有优秀的隔热和耐磨性能，对推动热障涂层材料的研究和热障涂层技术的应用具有重要意义。
High-entropy rare earth zirconate ceramic coating with low thermal conductivity and high wear resistance and preparation method of high-entropy rare earth zirconate ceramic coating
The invention relates to a high-entropy rare earth zirconate ceramic coating with low thermal conductivity and high wear resistance and a preparation method thereof, the coating is of a defective fluorite structure, the chemical structural formula of the coating is (Sm < 0.2 > Gd < 0.2 > Y < 0.2 > Er < 0.2 > Yb < 0.2 >) 2Zr2O7, and the high-entropy rare earth zirconate ceramic coating has good high-temperature stability and low thermal conductivity. The (Sm0. 2Gd0. 2Y0. 2Er0. 2Yb0. 2) 2Zr2O7 high-entropy ceramic coating prepared through atmospheric plasma spraying is of a layered structure, air holes exist in the surface, the heat conductivity of the coating can be reduced, all elements in the coating are evenly distributed, and the element segregation phenomenon does not occur. The high-entropy ceramic coating has excellent heat insulation and wear resistance, and is of great significance in promoting research of thermal barrier coating materials and application of thermal barrier coating technologies.
本发明涉及一种具有低热导率和高耐磨性的高熵稀土锆酸盐陶瓷涂层及其制备方法，该涂层为缺陷萤石结构，其化学结构式为(Sm0.2Gd0.2Y0.2Er0.2Yb0.2)2Zr2O7，具有良好的高温稳定性和较低的热导率。采用大气等离子喷涂制备(Sm0.2Gd0.2Y0.2Er0.2Yb0.2)2Zr2O7高熵陶瓷涂层为层状结构，表面存在气孔，有利于降低涂层的热导率，涂层中各元素分布均匀，没有出现元素偏析现象。该高熵陶瓷涂层具有优秀的隔热和耐磨性能，对推动热障涂层材料的研究和热障涂层技术的应用具有重要意义。
High-entropy rare earth zirconate ceramic coating with low thermal conductivity and high wear resistance and preparation method of high-entropy rare earth zirconate ceramic coating
一种具有低热导率和高耐磨性的高熵稀土锆酸盐陶瓷涂层及其制备方法
ZHAO XIAOBING (author) / WEI XING (author) / MA YANG (author) / HONG FEIYANG (author) / DONG XUANWEI (author) / WU YANMI (author)
2024-02-09
Patent
Electronic Resource
Chinese
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Thermal spraying spherical high-entropy rare earth zirconate powder and preparation method thereof
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