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High-entropy oxide ceramic based on high-entropy alloy precursor and preparation method thereof
The invention discloses high-entropy oxide ceramic based on a high-entropy alloy precursor and a preparation method of the high-entropy oxide ceramic. All metal elements in the high-entropy oxide ceramic or all metal elements in the same place are calculated according to the equal molar ratio, at least five metal elements serve as raw materials of the high-entropy oxide ceramic to be prepared into elemental metal mixed powder, a ball milling medium is added into the elemental metal mixed powder according to the mass ratio of (5-20): 1, and the high-entropy oxide ceramic is obtained through mechanical alloying and screening. And then the obtained high-entropy alloy precursor powder is subjected to high-temperature oxidation in the air atmosphere, and the high-entropy oxide ceramic is generated. By utilizing the method, the preparation of the high-entropy oxide ceramic under the condition of lower temperature can be realized, and the high-entropy oxide ceramic disclosed by the invention is stable in component, uniform in component and free of segregation. The preparation method has the advantages of simple required equipment, simple process and lower cost, and is favorable for realizing large-scale production of the high-entropy oxide ceramic material.
本发明公开了一种基于高熵合金前驱体的高熵氧化物陶瓷及其制备方法。所述高熵氧化物陶瓷中所有金属元素或者同一占位的各金属元素按等摩尔比计，以至少五种金属元素作为高熵氧化物陶瓷的原材料制成单质金属混合粉末，按质量比(5～20):1将球磨介质加入单质金属混合粉末中，通过机械合金化和过筛，制得高熵合金前驱体粉末，然后将所得高熵合金前驱体粉末在空气气氛中高温氧化，生成高熵氧化物陶瓷。利用该方法可实现较低温度条件下高熵氧化物陶瓷的制备，本发明的高熵氧化物陶瓷组元稳定、成分均匀、无偏析。该制备方法所需设备简单，工艺简单，成本较低，有利于实现高熵氧化物陶瓷材料的大规模生产。
High-entropy oxide ceramic based on high-entropy alloy precursor and preparation method thereof
The invention discloses high-entropy oxide ceramic based on a high-entropy alloy precursor and a preparation method of the high-entropy oxide ceramic. All metal elements in the high-entropy oxide ceramic or all metal elements in the same place are calculated according to the equal molar ratio, at least five metal elements serve as raw materials of the high-entropy oxide ceramic to be prepared into elemental metal mixed powder, a ball milling medium is added into the elemental metal mixed powder according to the mass ratio of (5-20): 1, and the high-entropy oxide ceramic is obtained through mechanical alloying and screening. And then the obtained high-entropy alloy precursor powder is subjected to high-temperature oxidation in the air atmosphere, and the high-entropy oxide ceramic is generated. By utilizing the method, the preparation of the high-entropy oxide ceramic under the condition of lower temperature can be realized, and the high-entropy oxide ceramic disclosed by the invention is stable in component, uniform in component and free of segregation. The preparation method has the advantages of simple required equipment, simple process and lower cost, and is favorable for realizing large-scale production of the high-entropy oxide ceramic material.
本发明公开了一种基于高熵合金前驱体的高熵氧化物陶瓷及其制备方法。所述高熵氧化物陶瓷中所有金属元素或者同一占位的各金属元素按等摩尔比计，以至少五种金属元素作为高熵氧化物陶瓷的原材料制成单质金属混合粉末，按质量比(5～20):1将球磨介质加入单质金属混合粉末中，通过机械合金化和过筛，制得高熵合金前驱体粉末，然后将所得高熵合金前驱体粉末在空气气氛中高温氧化，生成高熵氧化物陶瓷。利用该方法可实现较低温度条件下高熵氧化物陶瓷的制备，本发明的高熵氧化物陶瓷组元稳定、成分均匀、无偏析。该制备方法所需设备简单，工艺简单，成本较低，有利于实现高熵氧化物陶瓷材料的大规模生产。
High-entropy oxide ceramic based on high-entropy alloy precursor and preparation method thereof
一种基于高熵合金前驱体的高熵氧化物陶瓷及其制备方法
TIAN LIHUI (author) / JIANG ZHENG (author) / ZHANG HUI (author) / SHI JIAN (author)
2024-04-16
Patent
Electronic Resource
Chinese
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