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Compact nano transition metal carbide high-entropy ceramic and preparation method thereof
The invention belongs to the technical field of ceramics, and discloses a compact nano transition metal carbide high-entropy ceramic and a preparation method thereof.The preparation method comprises the steps that firstly, transition metal salt and a carbon source are mixed and stirred in an organic solvent at the temperature of 50-70 DEG C, and high-entropy carbide precursor wet gel is obtained; and drying the high-entropy carbide precursor wet gel to obtain high-entropy carbide precursor xerogel, grinding the high-entropy carbide precursor xerogel into powder, carrying out thermal insulation cracking in a protective atmosphere, and carrying out spark plasma sintering on the cracked powder at 1900-2000 DEG C to obtain the compact nano transition metal carbide high-entropy ceramic. The density of the prepared high-entropy carbide ceramic is larger than 95%, components are uniform, the grain size ranges from 70 nm to 80 nm, and the requirements of the high-entropy carbide ceramic for density, purity and grain size can be met.
本发明属于陶瓷技术领域，本发明公开了一种致密纳米过渡金属碳化物高熵陶瓷及其制备方法，首先过渡金属盐和碳源在有机溶剂中于50‑70℃混合搅拌，得到高熵碳化物前驱体湿凝胶，高熵碳化物前驱体湿凝胶经干燥得到高熵碳化物前驱体干凝胶，高熵碳化物前驱体干凝胶研磨至粉末状，之后于保护气氛下保温裂解，裂解后的粉末于1900～2000℃进行放电等离子烧结，得到致密纳米过渡金属碳化物高熵陶瓷。本发明制备得到的高熵碳化物陶瓷的致密度大于95％、成分均匀、晶粒尺寸在70‑80nm，能够满足高熵碳化物陶瓷对致密度、纯度和晶粒尺寸的要求。
Compact nano transition metal carbide high-entropy ceramic and preparation method thereof
The invention belongs to the technical field of ceramics, and discloses a compact nano transition metal carbide high-entropy ceramic and a preparation method thereof.The preparation method comprises the steps that firstly, transition metal salt and a carbon source are mixed and stirred in an organic solvent at the temperature of 50-70 DEG C, and high-entropy carbide precursor wet gel is obtained; and drying the high-entropy carbide precursor wet gel to obtain high-entropy carbide precursor xerogel, grinding the high-entropy carbide precursor xerogel into powder, carrying out thermal insulation cracking in a protective atmosphere, and carrying out spark plasma sintering on the cracked powder at 1900-2000 DEG C to obtain the compact nano transition metal carbide high-entropy ceramic. The density of the prepared high-entropy carbide ceramic is larger than 95%, components are uniform, the grain size ranges from 70 nm to 80 nm, and the requirements of the high-entropy carbide ceramic for density, purity and grain size can be met.
本发明属于陶瓷技术领域，本发明公开了一种致密纳米过渡金属碳化物高熵陶瓷及其制备方法，首先过渡金属盐和碳源在有机溶剂中于50‑70℃混合搅拌，得到高熵碳化物前驱体湿凝胶，高熵碳化物前驱体湿凝胶经干燥得到高熵碳化物前驱体干凝胶，高熵碳化物前驱体干凝胶研磨至粉末状，之后于保护气氛下保温裂解，裂解后的粉末于1900～2000℃进行放电等离子烧结，得到致密纳米过渡金属碳化物高熵陶瓷。本发明制备得到的高熵碳化物陶瓷的致密度大于95％、成分均匀、晶粒尺寸在70‑80nm，能够满足高熵碳化物陶瓷对致密度、纯度和晶粒尺寸的要求。
Compact nano transition metal carbide high-entropy ceramic and preparation method thereof
一种致密纳米过渡金属碳化物高熵陶瓷及其制备方法
LIU WEN (Autor:in) / QU ZIHAO (Autor:in) / WANG HAILONG (Autor:in) / LI MINGLIANG (Autor:in) / ZHU JINPENG (Autor:in) / LU HONGXIA (Autor:in) / FAN BINGBING (Autor:in) / XU HONGLIANG (Autor:in) / SHAO GANG (Autor:in) / ZHANG RUI (Autor:in)
11.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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