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High-entropy oxide powder material for thermal barrier coating as well as preparation method and application of high-entropy oxide powder material
The invention belongs to the technical field of materials for aerospace engines, and discloses a high-entropy oxide powder material for a thermal barrier coating as well as a preparation method and application of the high-entropy oxide powder material. Introducing at least two metal elements into the fluorite structure of CeO2 to obtain a high-entropy oxide powder material with a disordered fluorite structure; the metal elements comprise rare earth elements and transition metal elements; the rare earth element is one or two of La and Pr; the transition metal element is one or two of Zr and Y. According to the preparation method, the micron-sized high-entropy oxide powder material is synthesized by using a coprecipitation method, the thermal barrier coating is prepared by combining a brushing method with a vacuum melting method, the high-entropy oxide powder material prepared by the preparation method overcomes the defects of a traditional thermal barrier coating YSZ (Yttria Stabilized Zirconium) material, the phase stability can still be kept at the temperature of about 1500 DEG C, and the thermal barrier coating is prepared by using the high-entropy oxide powder material. And a thermal barrier coating material system is widened to the field of high-entropy ceramics.
本发明属于航空航天发动机用材料技术领域，公开了一种热障涂层用高熵氧化物粉末材料及其制备方法和应用，本发明以CeO2的萤石结构为基质，采用共沉淀法，在CeO2的萤石结构的内部引入至少两种金属元素获得无序萤石结构的高熵氧化物粉末材料；所述金属元素包括稀土元素以及过渡族金属元素；稀土元素为La和Pr中的一种或两种；过渡族金属元素为Zr和Y中的一种或两种。本发明使用共沉淀法合成微米级高熵氧化物粉末材料，并通过涂刷法结合真空熔炼法的技术，完成热障涂层的制备，且本发明制备的高熵氧化物粉末材料弥补了传统热障涂层YSZ材料的缺点，在1500℃附近仍能保持相稳定性，将热障涂层材料体系拓宽到高熵陶瓷领域。
High-entropy oxide powder material for thermal barrier coating as well as preparation method and application of high-entropy oxide powder material
The invention belongs to the technical field of materials for aerospace engines, and discloses a high-entropy oxide powder material for a thermal barrier coating as well as a preparation method and application of the high-entropy oxide powder material. Introducing at least two metal elements into the fluorite structure of CeO2 to obtain a high-entropy oxide powder material with a disordered fluorite structure; the metal elements comprise rare earth elements and transition metal elements; the rare earth element is one or two of La and Pr; the transition metal element is one or two of Zr and Y. According to the preparation method, the micron-sized high-entropy oxide powder material is synthesized by using a coprecipitation method, the thermal barrier coating is prepared by combining a brushing method with a vacuum melting method, the high-entropy oxide powder material prepared by the preparation method overcomes the defects of a traditional thermal barrier coating YSZ (Yttria Stabilized Zirconium) material, the phase stability can still be kept at the temperature of about 1500 DEG C, and the thermal barrier coating is prepared by using the high-entropy oxide powder material. And a thermal barrier coating material system is widened to the field of high-entropy ceramics.
本发明属于航空航天发动机用材料技术领域，公开了一种热障涂层用高熵氧化物粉末材料及其制备方法和应用，本发明以CeO2的萤石结构为基质，采用共沉淀法，在CeO2的萤石结构的内部引入至少两种金属元素获得无序萤石结构的高熵氧化物粉末材料；所述金属元素包括稀土元素以及过渡族金属元素；稀土元素为La和Pr中的一种或两种；过渡族金属元素为Zr和Y中的一种或两种。本发明使用共沉淀法合成微米级高熵氧化物粉末材料，并通过涂刷法结合真空熔炼法的技术，完成热障涂层的制备，且本发明制备的高熵氧化物粉末材料弥补了传统热障涂层YSZ材料的缺点，在1500℃附近仍能保持相稳定性，将热障涂层材料体系拓宽到高熵陶瓷领域。
High-entropy oxide powder material for thermal barrier coating as well as preparation method and application of high-entropy oxide powder material
一种热障涂层用高熵氧化物粉末材料及其制备方法和应用
LI XIAOQIANG (author) / WEI CHONG (author) / DE YUEYING (author) / ZHENG CE (author)
2022-08-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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