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Infrared heat shielding type rare earth hafnate-based composite ceramic coating material and preparation method thereof
The invention discloses an infrared heat shielding type rare earth hafnate-based composite ceramic coating material and a preparation method thereof, and belongs to the technical field of thermal barrier coating materials. The invention aims to solve the problems that although an existing rare earth hafnate ceramic material mainly adopting a pyrochlore/defect fluorite structure has the advantages of low thermal conductivity and stable high-temperature phase, the rare earth hafnate ceramic material does not have a shielding effect on infrared thermal radiation, and a prepared thermal barrier coating can be penetrated by the infrared thermal radiation at high temperature, so that a metal substrate is directly radiated and heated, and the thermal barrier coating cannot be damaged. Therefore, the service life of the coating material is shortened. According to the invention, spinel structure ceramic with low infrared transmittance, high infrared emissivity and high infrared absorptivity is used as a dispersed phase to modify rare earth hafnate-based phase ceramic with a pyrochlore/defect fluorite structure, so that the infrared heat shielding type composite ceramic coating material with low heat conductivity, stable high-temperature phase and ultralow infrared transmittance is prepared; good application prospects are realized.
一种红外热屏蔽型稀土铪酸盐基复合陶瓷涂层材料及其制备方法，它属于热障涂层材料技术领域。本发明的目的是为了解决现有以烧绿石/缺陷萤石结构为主的稀土铪酸盐陶瓷材料虽然具有低热导和高温相稳定的优点，但对红外热辐射不具备屏蔽效应，制备的热障涂层在高温下会被红外热辐射穿透，导致金属基板被直接辐射加热，从而降低涂层材料的工作寿命的问题。本发明将具有低红外透过率、高红外发射率以及高红外吸收率的尖晶石结构陶瓷作为弥散相，对烧绿石/缺陷萤石结构的稀土铪酸盐基相陶瓷进行改性，制备一种兼具低热导、高温相稳定、超低红外透过率的红外热屏蔽型复合陶瓷涂层材料，具有良好的应用前景。
Infrared heat shielding type rare earth hafnate-based composite ceramic coating material and preparation method thereof
The invention discloses an infrared heat shielding type rare earth hafnate-based composite ceramic coating material and a preparation method thereof, and belongs to the technical field of thermal barrier coating materials. The invention aims to solve the problems that although an existing rare earth hafnate ceramic material mainly adopting a pyrochlore/defect fluorite structure has the advantages of low thermal conductivity and stable high-temperature phase, the rare earth hafnate ceramic material does not have a shielding effect on infrared thermal radiation, and a prepared thermal barrier coating can be penetrated by the infrared thermal radiation at high temperature, so that a metal substrate is directly radiated and heated, and the thermal barrier coating cannot be damaged. Therefore, the service life of the coating material is shortened. According to the invention, spinel structure ceramic with low infrared transmittance, high infrared emissivity and high infrared absorptivity is used as a dispersed phase to modify rare earth hafnate-based phase ceramic with a pyrochlore/defect fluorite structure, so that the infrared heat shielding type composite ceramic coating material with low heat conductivity, stable high-temperature phase and ultralow infrared transmittance is prepared; good application prospects are realized.
一种红外热屏蔽型稀土铪酸盐基复合陶瓷涂层材料及其制备方法，它属于热障涂层材料技术领域。本发明的目的是为了解决现有以烧绿石/缺陷萤石结构为主的稀土铪酸盐陶瓷材料虽然具有低热导和高温相稳定的优点，但对红外热辐射不具备屏蔽效应，制备的热障涂层在高温下会被红外热辐射穿透，导致金属基板被直接辐射加热，从而降低涂层材料的工作寿命的问题。本发明将具有低红外透过率、高红外发射率以及高红外吸收率的尖晶石结构陶瓷作为弥散相，对烧绿石/缺陷萤石结构的稀土铪酸盐基相陶瓷进行改性，制备一种兼具低热导、高温相稳定、超低红外透过率的红外热屏蔽型复合陶瓷涂层材料，具有良好的应用前景。
Infrared heat shielding type rare earth hafnate-based composite ceramic coating material and preparation method thereof
一种红外热屏蔽型稀土铪酸盐基复合陶瓷涂层材料及其制备方法
WANG SHUQI (author) / ZHAO QINGYUAN (author) / CHEN GUOLIANG (author) / ZOU YONGCHUN (author) / WANG YAMING (author) / PENG ZIJIAN (author) / YAO JUNTENG (author) / OUYANG JIAHU (author) / ZHOU YU (author)
2025-01-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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