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Ultrahigh-temperature high-entropy carbide powder and preparation method thereof
The invention discloses ultrahigh-temperature high-entropy carbide powder and a preparation method thereof, the ultrahigh-temperature high-entropy carbide powder is a single-phase solid solution and has a rock salt phase structure, the molecular formula of the ultrahigh-temperature high-entropy carbide powder is MxC, M is 4-5 of Zr, Ti, Hf, Mo, Ta and Nb, and x is more than 5% and less than 35%; a citric acid complexing sol-gel method is combined with a ball-milling mixing technology, and then high-temperature heat treatment is carried out, so that molecular-level mixing can be obtained in a very short time through chemical reaction in a liquid phase, the chemical ratio of the material can be easily and accurately controlled, the preparation process is simple, the synthesis temperature is low, and the cost is low; and the prepared high-entropy carbide powder has the advantages of small particle size, high purity and the like.
本发明公开一种超高温高熵碳化物粉体及其制备方法，超高温高熵碳化物粉体为单一相固溶体，具有岩盐相结构，其分子式为MxC，其中M为Zr、Ti、Hf、Mo、Ta和Nb中的4‑5种，其中5％＜x＜35％；本发明通过柠檬酸络合溶胶凝胶法结合球磨混合技术，再经过高温热处理后得到，在液相中进行的化学反应，能很短的时间内获得分子水平的混合，容易实现材料化学配比的精确控制，制备工艺简单、合成温度低，成本低；所制备的高熵碳化物粉体具有粒径小，纯度高等优点。
Ultrahigh-temperature high-entropy carbide powder and preparation method thereof
The invention discloses ultrahigh-temperature high-entropy carbide powder and a preparation method thereof, the ultrahigh-temperature high-entropy carbide powder is a single-phase solid solution and has a rock salt phase structure, the molecular formula of the ultrahigh-temperature high-entropy carbide powder is MxC, M is 4-5 of Zr, Ti, Hf, Mo, Ta and Nb, and x is more than 5% and less than 35%; a citric acid complexing sol-gel method is combined with a ball-milling mixing technology, and then high-temperature heat treatment is carried out, so that molecular-level mixing can be obtained in a very short time through chemical reaction in a liquid phase, the chemical ratio of the material can be easily and accurately controlled, the preparation process is simple, the synthesis temperature is low, and the cost is low; and the prepared high-entropy carbide powder has the advantages of small particle size, high purity and the like.
本发明公开一种超高温高熵碳化物粉体及其制备方法，超高温高熵碳化物粉体为单一相固溶体，具有岩盐相结构，其分子式为MxC，其中M为Zr、Ti、Hf、Mo、Ta和Nb中的4‑5种，其中5％＜x＜35％；本发明通过柠檬酸络合溶胶凝胶法结合球磨混合技术，再经过高温热处理后得到，在液相中进行的化学反应，能很短的时间内获得分子水平的混合，容易实现材料化学配比的精确控制，制备工艺简单、合成温度低，成本低；所制备的高熵碳化物粉体具有粒径小，纯度高等优点。
Ultrahigh-temperature high-entropy carbide powder and preparation method thereof
一种超高温高熵碳化物粉体及其制备方法
LIU HULIN (author) / DANG FENGZHEN (author) / LIU CHANGQING (author) / XUE YUNLONG (author) / WU YUANTING (author)
2021-05-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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