Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Six-element high-entropy transition metal boride ceramic powder and preparation method thereof
The invention relates to six-element high-entropy transition metal boride ceramic powder and a preparation method thereof. According to the technical scheme, the preparation method comprises the following steps: mixing any six of hafnium oxide powder, zirconium oxide powder, titanium oxide powder, tantalum oxide powder, niobium oxide powder, vanadium oxide powder, tungsten oxide powder, molybdenum oxide powder and chromium oxide powder with boron carbide powder and amorphous carbon powder according to a stoichiometric ratio of a synthetic reaction to obtain a mixture A; uniformly mixing the mixture A, potassium chloride powder and sodium chloride powder to obtain a mixture B; and putting the crucible filled with the mixture B into a sagger, then putting the sagger into a microwave oven, carrying out heat preservation in vacuum and argon atmosphere at 1250-1450 DEG C, and carrying out natural cooling, cleaning and drying to obtain the six-element high-entropy transition metal boride ceramic powder. The preparation method has the advantages of low cost, simple process, low reaction temperature and high reaction rate, and the prepared product has high configuration entropy, high element distribution uniformity, uniform hexagonal plate-shaped single crystal structure and good sintering activity.
本发明涉及一种六元高熵过渡金属硼化物陶瓷粉体及其制备方法。其技术方案是：将氧化铪粉体、氧化锆粉体、氧化钛粉体、氧化钽粉体、氧化铌粉体、氧化钒粉体、氧化钨粉体、氧化钼粉体和氧化铬粉体中的任意六种与碳化硼粉体和无定形炭粉体按照合成反应的化学计量比混合，得到混合物A。另将混合物A、氯化钾粉体和氯化钠粉体混匀，得到混合物B。将装有混合物B的坩埚放入匣钵后置于微波加热炉中，在真空、氩气气氛和1250～1450℃条件下保温，自然冷却，清洗，干燥，即得六元高熵过渡金属硼化物陶瓷粉体。本发明成本低、工艺简单、反应温度低和应速率高，所制制品具有高构型熵、高元素分布均匀性、均匀的六方板状单晶结构和良好的烧结活性。
Six-element high-entropy transition metal boride ceramic powder and preparation method thereof
The invention relates to six-element high-entropy transition metal boride ceramic powder and a preparation method thereof. According to the technical scheme, the preparation method comprises the following steps: mixing any six of hafnium oxide powder, zirconium oxide powder, titanium oxide powder, tantalum oxide powder, niobium oxide powder, vanadium oxide powder, tungsten oxide powder, molybdenum oxide powder and chromium oxide powder with boron carbide powder and amorphous carbon powder according to a stoichiometric ratio of a synthetic reaction to obtain a mixture A; uniformly mixing the mixture A, potassium chloride powder and sodium chloride powder to obtain a mixture B; and putting the crucible filled with the mixture B into a sagger, then putting the sagger into a microwave oven, carrying out heat preservation in vacuum and argon atmosphere at 1250-1450 DEG C, and carrying out natural cooling, cleaning and drying to obtain the six-element high-entropy transition metal boride ceramic powder. The preparation method has the advantages of low cost, simple process, low reaction temperature and high reaction rate, and the prepared product has high configuration entropy, high element distribution uniformity, uniform hexagonal plate-shaped single crystal structure and good sintering activity.
本发明涉及一种六元高熵过渡金属硼化物陶瓷粉体及其制备方法。其技术方案是：将氧化铪粉体、氧化锆粉体、氧化钛粉体、氧化钽粉体、氧化铌粉体、氧化钒粉体、氧化钨粉体、氧化钼粉体和氧化铬粉体中的任意六种与碳化硼粉体和无定形炭粉体按照合成反应的化学计量比混合，得到混合物A。另将混合物A、氯化钾粉体和氯化钠粉体混匀，得到混合物B。将装有混合物B的坩埚放入匣钵后置于微波加热炉中，在真空、氩气气氛和1250～1450℃条件下保温，自然冷却，清洗，干燥，即得六元高熵过渡金属硼化物陶瓷粉体。本发明成本低、工艺简单、反应温度低和应速率高，所制制品具有高构型熵、高元素分布均匀性、均匀的六方板状单晶结构和良好的烧结活性。
Six-element high-entropy transition metal boride ceramic powder and preparation method thereof
一种六元高熵过渡金属硼化物陶瓷粉体及其制备方法
LIU JIANGHAO (Autor:in) / XU CHUNYU (Autor:in) / LIU DELEI (Autor:in) / ZHANG HAIJUN (Autor:in) / ZHANG SHAOWEI (Autor:in)
11.04.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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