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High-entropy transition-rare earth metal diboride ceramic material and preparation method thereof
The invention provides a high-entropy transition-rare earth metal diboride ceramic material and a preparation method thereof, and belongs to the technical field of high-entropy ceramics. The invention provides a high-entropy transition-rare earth metal diboride ceramic material, the chemical formula of the high-entropy transition-rare earth metal diboride ceramic material is (HfaZrbTacNbdREe) B2, RE is one of Lu, Tm, Er, Ho and Dy, and a + b + c + d + e = 1. The high-entropy single-phase structure of the transition metal diboride and the rare earth metal diboride is constructed through the characteristic of high-entropy phase stability, and the stability of the crystal structure is effectively enhanced, so that the mechanical property of the high-entropy ceramic is improved. Experimental results show that the bulk modulus of the high-entropy transition-rare earth metal diboride ceramic material provided by the invention is 252 to 260 GPa, the shear modulus of the high-entropy transition-rare earth metal diboride ceramic material is 223 to 228 GPa, the Young modulus of the high-entropy transition-rare earth metal diboride ceramic material is 516 to 530 GPa, and the hardness of the high-entropy transition-rare earth metal diboride ceramic material is 37 to 38.5 GPa.
本发明提供了一种高熵过渡‑稀土金属二硼化物陶瓷材料及其制备方法，属于高熵陶瓷技术领域。本发明提供了一种高熵过渡‑稀土金属二硼化物陶瓷材料，化学式为：(HfaZrbTacNbdREe)B2，其中，RE为Lu、Tm、Er、Ho和Dy中的一种且a+b+c+d+e＝1。本发明通过高熵相稳定性的特点，构建过渡金属二硼化物和稀土金属二硼化物的高熵单相结构，有效强化了晶体结构的稳定性，从而提高了高熵陶瓷的力学性能。实验结果表明，本发明提供的高熵过渡‑稀土金属二硼化物陶瓷材料的体积模量为252～260GPa，剪切模量为223～228GPa，杨氏模量为516～530GPa，硬度为37～38.5GPa。
High-entropy transition-rare earth metal diboride ceramic material and preparation method thereof
The invention provides a high-entropy transition-rare earth metal diboride ceramic material and a preparation method thereof, and belongs to the technical field of high-entropy ceramics. The invention provides a high-entropy transition-rare earth metal diboride ceramic material, the chemical formula of the high-entropy transition-rare earth metal diboride ceramic material is (HfaZrbTacNbdREe) B2, RE is one of Lu, Tm, Er, Ho and Dy, and a + b + c + d + e = 1. The high-entropy single-phase structure of the transition metal diboride and the rare earth metal diboride is constructed through the characteristic of high-entropy phase stability, and the stability of the crystal structure is effectively enhanced, so that the mechanical property of the high-entropy ceramic is improved. Experimental results show that the bulk modulus of the high-entropy transition-rare earth metal diboride ceramic material provided by the invention is 252 to 260 GPa, the shear modulus of the high-entropy transition-rare earth metal diboride ceramic material is 223 to 228 GPa, the Young modulus of the high-entropy transition-rare earth metal diboride ceramic material is 516 to 530 GPa, and the hardness of the high-entropy transition-rare earth metal diboride ceramic material is 37 to 38.5 GPa.
本发明提供了一种高熵过渡‑稀土金属二硼化物陶瓷材料及其制备方法，属于高熵陶瓷技术领域。本发明提供了一种高熵过渡‑稀土金属二硼化物陶瓷材料，化学式为：(HfaZrbTacNbdREe)B2，其中，RE为Lu、Tm、Er、Ho和Dy中的一种且a+b+c+d+e＝1。本发明通过高熵相稳定性的特点，构建过渡金属二硼化物和稀土金属二硼化物的高熵单相结构，有效强化了晶体结构的稳定性，从而提高了高熵陶瓷的力学性能。实验结果表明，本发明提供的高熵过渡‑稀土金属二硼化物陶瓷材料的体积模量为252～260GPa，剪切模量为223～228GPa，杨氏模量为516～530GPa，硬度为37～38.5GPa。
High-entropy transition-rare earth metal diboride ceramic material and preparation method thereof
一种高熵过渡-稀土金属二硼化物陶瓷材料及其制备方法
ZHU SHIZHEN (author) / LIU YANBO (author) / LIU LING (author) / MA ZHUANG (author) / ZHANG ZE (author)
2022-05-17
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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