Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-entropy carbide ultrahigh-temperature ceramic powder and preparation method thereof
The invention provides high-entropy carbide ultrahigh-temperature ceramic powder and a preparation method thereof. The molecular formula of the ceramic powder is (M1M2... Mn) C, wherein M is at least four of Zr, Ti, Hf, V, Nb, Ta, Mo or W, and the ceramic powder has a single face-centered cubic structure and is a single-phase solid solution. The method comprises the following steps of: preparing a cathode from at least four metal oxides and carbon powder, and carrying out molten salt electrolysis to obtain the nano ceramic powder. According to the method, mixed electric deoxidation, in-situ carbonization and solid solution of various metal oxides can be simultaneously realized in the electrolysis process, and the method has the advantages of being short in technological process, low in raw material price, low in synthesis temperature, low in equipment requirement, simple in technological process, easy to industrialize, high in economic value and the like; an economical and feasible new route can be provided for preparing the high-quality high-entropy carbide nano powder; and the ceramic can also be used as a semi-finished product for aerospace parts, coating materials, special functional ceramics and the like.
本发明提供了一种高熵碳化物超高温陶瓷粉体及其制备方法，所述陶瓷粉体分子式为(M1x1M2x2……Mnxn)C，M为Zr、Ti、Hf、V、Nb、Ta、Mo或W中的至少四种，具有单一面心立方结构，呈单一相固溶体。所述方法：将至少四种金属氧化物和碳粉制成阴极，熔盐电解得到纳米陶瓷粉体。本发明能够在电解过程中同时实现多种金属氧化物混合电脱氧和原位碳化以及固溶，具有工艺流程短、原料价格低廉、合成温度低、设备要求低、工艺过程简单，易于产业化及经济价值高等优点；能够为制备高质量的高熵碳化物纳米粉体提供一条经济和可行的新路线；还能够被作为半成品用于宇航部件、涂层材料和特种功能陶瓷等方面。
High-entropy carbide ultrahigh-temperature ceramic powder and preparation method thereof
The invention provides high-entropy carbide ultrahigh-temperature ceramic powder and a preparation method thereof. The molecular formula of the ceramic powder is (M1M2... Mn) C, wherein M is at least four of Zr, Ti, Hf, V, Nb, Ta, Mo or W, and the ceramic powder has a single face-centered cubic structure and is a single-phase solid solution. The method comprises the following steps of: preparing a cathode from at least four metal oxides and carbon powder, and carrying out molten salt electrolysis to obtain the nano ceramic powder. According to the method, mixed electric deoxidation, in-situ carbonization and solid solution of various metal oxides can be simultaneously realized in the electrolysis process, and the method has the advantages of being short in technological process, low in raw material price, low in synthesis temperature, low in equipment requirement, simple in technological process, easy to industrialize, high in economic value and the like; an economical and feasible new route can be provided for preparing the high-quality high-entropy carbide nano powder; and the ceramic can also be used as a semi-finished product for aerospace parts, coating materials, special functional ceramics and the like.
本发明提供了一种高熵碳化物超高温陶瓷粉体及其制备方法，所述陶瓷粉体分子式为(M1x1M2x2……Mnxn)C，M为Zr、Ti、Hf、V、Nb、Ta、Mo或W中的至少四种，具有单一面心立方结构，呈单一相固溶体。所述方法：将至少四种金属氧化物和碳粉制成阴极，熔盐电解得到纳米陶瓷粉体。本发明能够在电解过程中同时实现多种金属氧化物混合电脱氧和原位碳化以及固溶，具有工艺流程短、原料价格低廉、合成温度低、设备要求低、工艺过程简单，易于产业化及经济价值高等优点；能够为制备高质量的高熵碳化物纳米粉体提供一条经济和可行的新路线；还能够被作为半成品用于宇航部件、涂层材料和特种功能陶瓷等方面。
High-entropy carbide ultrahigh-temperature ceramic powder and preparation method thereof
高熵碳化物超高温陶瓷粉体及其制备方法
LIU HONGXIA (Autor:in) / SONG WEIHAO (Autor:in) / LIANG TENGFEI (Autor:in) / WU DONGSHENG (Autor:in) / CHEN WEIDONG (Autor:in) / BAI YU (Autor:in)
04.01.2022
Patent
Elektronische Ressource
Chinesisch
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