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High-temperature phase-stable multi-component rare earth silicate solid solution ceramic and preparation method thereof
The invention relates to the field of ceramic materials for extreme environments, and in particular, relates to a multi-component rare earth silicate solid solution ceramic material with excellent high-temperature phase stability and a preparation method thereof. The chemical formula of the multi-component rare earth silicate solid solution ceramic material is (REI0.25REII0.25REIII0.25REIV0.25)2Si2O7, wherein the REI, the REII, the REIII and the REIV are respectively one of rare earth elements Y, Sc, Ho, Er, Tm, Yb and Lu. The preparation method specifically comprises the preparation processes: taking corresponding rare earth oxide powder and silicon oxide powder as raw materials, performing wet mixing, and performing pressureless sintering in an air atmosphere to obtain the multi-component rare earth silicate solid solution ceramic material; and performing hot-pressing sintering in a hot-pressing furnace filled with a protective atmosphere to obtain the multi-component rare earth silicate solid solution ceramic block material with excellent high-temperature phase stability. According to the preparation method disclosed by the invention, the (REI0.25REII0.25REIII0.25REIV0.25)2Si2O7ceramic material with high purity, high density and excellent high-temperature phase stability is prepared.
本发明涉及极端环境用陶瓷材料领域，具体为一种具有优异高温相稳定性的多组元稀土硅酸盐固溶体陶瓷材料及其制备方法。该多组元稀土硅酸盐固溶体陶瓷材料的化学式为(RERERERE)SiO，其中RE、RE、RE和RE分别为稀土元素Y、Sc、Ho、Er、Tm、Yb和Lu中的一种。制备过程具体为：以对应的稀土氧化物粉和氧化硅粉为原料，经湿法混合，在空气气氛下无压烧结合成获得多组元稀土硅酸盐固溶体陶瓷材料；并可在通有保护气氛的热压炉内热压烧结，获得具有优异高温相稳定性能的多组元稀土硅酸盐固溶体陶瓷块体材料。本发明制备出具有高纯度、高致密度和优异高温相稳定性能的(RERERERE)SiO陶瓷材料。
High-temperature phase-stable multi-component rare earth silicate solid solution ceramic and preparation method thereof
The invention relates to the field of ceramic materials for extreme environments, and in particular, relates to a multi-component rare earth silicate solid solution ceramic material with excellent high-temperature phase stability and a preparation method thereof. The chemical formula of the multi-component rare earth silicate solid solution ceramic material is (REI0.25REII0.25REIII0.25REIV0.25)2Si2O7, wherein the REI, the REII, the REIII and the REIV are respectively one of rare earth elements Y, Sc, Ho, Er, Tm, Yb and Lu. The preparation method specifically comprises the preparation processes: taking corresponding rare earth oxide powder and silicon oxide powder as raw materials, performing wet mixing, and performing pressureless sintering in an air atmosphere to obtain the multi-component rare earth silicate solid solution ceramic material; and performing hot-pressing sintering in a hot-pressing furnace filled with a protective atmosphere to obtain the multi-component rare earth silicate solid solution ceramic block material with excellent high-temperature phase stability. According to the preparation method disclosed by the invention, the (REI0.25REII0.25REIII0.25REIV0.25)2Si2O7ceramic material with high purity, high density and excellent high-temperature phase stability is prepared.
本发明涉及极端环境用陶瓷材料领域，具体为一种具有优异高温相稳定性的多组元稀土硅酸盐固溶体陶瓷材料及其制备方法。该多组元稀土硅酸盐固溶体陶瓷材料的化学式为(RERERERE)SiO，其中RE、RE、RE和RE分别为稀土元素Y、Sc、Ho、Er、Tm、Yb和Lu中的一种。制备过程具体为：以对应的稀土氧化物粉和氧化硅粉为原料，经湿法混合，在空气气氛下无压烧结合成获得多组元稀土硅酸盐固溶体陶瓷材料；并可在通有保护气氛的热压炉内热压烧结，获得具有优异高温相稳定性能的多组元稀土硅酸盐固溶体陶瓷块体材料。本发明制备出具有高纯度、高致密度和优异高温相稳定性能的(RERERERE)SiO陶瓷材料。
High-temperature phase-stable multi-component rare earth silicate solid solution ceramic and preparation method thereof
高温相稳定多组元稀土硅酸盐固溶体陶瓷及其制备方法
WANG JINGYANG (author) / SUN LUCHAO (author) / LUO YIXIU (author) / WU ZHEN (author) / DU TIEFENG (author)
2020-04-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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