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High-entropy rare earth silicate ceramic powder resistant to high-temperature water and oxygen corrosion and preparation method thereof
The invention belongs to the technical field of high-temperature ceramics and composite materials, and particularly relates to high-entropy rare earth silicate ceramic powder resistant to high-temperature water and oxygen corrosion and a preparation method of the high-entropy rare earth silicate ceramic powder resistant to high-temperature water and oxygen corrosion, the molecular formula of the high-entropy rare earth silicate ceramic powder resistant to high-temperature water and oxygen corrosion is (RE) 2Si2.2-2.4 O7, and RE is a combination of four or five of Yb, Y, Er, Ho and Dy; the high-entropy rare earth silicate powder is prepared by a sol-gel method. The prepared high-entropy rare earth silicate material can form a stable single-phase solid solution, elements in the powder are uniformly distributed, the purity is high, the operation is simple, and the cost is low; in addition, the high-entropy rare earth silicate of the system has excellent water and oxygen corrosion resistance, and after the high-entropy rare earth silicate is corroded for 50-200 hours in a quasi-static water and oxygen environment with the temperature of 1100-1500 DEG C and the concentration of 50% of H2O and 50% of O2, the weight loss rate is only 0.001-0.05%.
本发明属于高温陶瓷及复合材料技术领域，具体涉及耐高温水氧腐蚀的高熵稀土硅酸盐陶瓷粉体及其制备方法，分子式为(RE)2Si2.2～2.4O7，其中，RE＝Yb、Y、Er、Ho、Dy其中四种或五种元素的组合；本发明高熵稀土硅酸盐粉体通过溶胶凝胶法制备而成。本发明所制备的高熵稀土硅酸盐材料可以形成稳定的单相固溶体，粉体中元素分布均匀，纯度高，操作简单，成本低廉；此外这种体系的高熵稀土硅酸盐具有优异的抗水氧腐蚀性能，在1100～1500℃、50％H2O‑50％O2的准静态水氧环境中腐蚀50～200h后，失重率仅为0.001～0.05％。
High-entropy rare earth silicate ceramic powder resistant to high-temperature water and oxygen corrosion and preparation method thereof
The invention belongs to the technical field of high-temperature ceramics and composite materials, and particularly relates to high-entropy rare earth silicate ceramic powder resistant to high-temperature water and oxygen corrosion and a preparation method of the high-entropy rare earth silicate ceramic powder resistant to high-temperature water and oxygen corrosion, the molecular formula of the high-entropy rare earth silicate ceramic powder resistant to high-temperature water and oxygen corrosion is (RE) 2Si2.2-2.4 O7, and RE is a combination of four or five of Yb, Y, Er, Ho and Dy; the high-entropy rare earth silicate powder is prepared by a sol-gel method. The prepared high-entropy rare earth silicate material can form a stable single-phase solid solution, elements in the powder are uniformly distributed, the purity is high, the operation is simple, and the cost is low; in addition, the high-entropy rare earth silicate of the system has excellent water and oxygen corrosion resistance, and after the high-entropy rare earth silicate is corroded for 50-200 hours in a quasi-static water and oxygen environment with the temperature of 1100-1500 DEG C and the concentration of 50% of H2O and 50% of O2, the weight loss rate is only 0.001-0.05%.
本发明属于高温陶瓷及复合材料技术领域，具体涉及耐高温水氧腐蚀的高熵稀土硅酸盐陶瓷粉体及其制备方法，分子式为(RE)2Si2.2～2.4O7，其中，RE＝Yb、Y、Er、Ho、Dy其中四种或五种元素的组合；本发明高熵稀土硅酸盐粉体通过溶胶凝胶法制备而成。本发明所制备的高熵稀土硅酸盐材料可以形成稳定的单相固溶体，粉体中元素分布均匀，纯度高，操作简单，成本低廉；此外这种体系的高熵稀土硅酸盐具有优异的抗水氧腐蚀性能，在1100～1500℃、50％H2O‑50％O2的准静态水氧环境中腐蚀50～200h后，失重率仅为0.001～0.05％。
High-entropy rare earth silicate ceramic powder resistant to high-temperature water and oxygen corrosion and preparation method thereof
耐高温水氧腐蚀的高熵稀土硅酸盐陶瓷粉体及其制备方法
LIU YONGSHENG (author) / CHEN PINXIAO (author) / HE FANG (author) / DONG ZEHUA (author) / ZHANG YUNHAI (author) / DONG NING (author)
2024-01-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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