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Double-phase high-entropy ceramic prepared by combining high-temperature and high-pressure sintering and preparation method of double-phase high-entropy ceramic
The invention discloses double-phase high-entropy ceramic prepared by combining high-temperature and high-pressure sintering and a preparation method of the double-phase high-entropy ceramic. According to the invention, the dual-phase high-entropy ceramic is prepared by combining high-temperature and high-pressure sintering; the dual-phase high-entropy ceramic is composed of t-phase RETaO4 ceramic and t-phase zirconia ceramic; wherein RE specifically refers to Sc, Y and lanthanide rare earth elements, the RETaO4 ceramic capable of stably existing in a t phase at the room temperature is obtained through the preparation method of the double-phase high-entropy ceramic, the RETaO4 ceramic can also generate extremely high fracture toughness at the room temperature, meanwhile, the RETaO4 ceramic stably coexists with t-phase high-entropy zirconia ceramic, and therefore the fracture toughness of the RETaO4 ceramic is greatly improved. The final material has the performance advantages of low thermal conductivity, high thermal expansion coefficient, high hardness and the like, and the working temperature and the application range of the material are further improved.
本发明公开了一种结合高温高压烧结制备的双相高熵陶瓷及其制备方法。本发明通过结合高温高压烧结制备的双相高熵陶瓷，所述双相高熵陶瓷由t相的RETaO4陶瓷以及t相氧化锆陶瓷组成；其中，RE具体为Sc、Y和镧系稀土元素，以及所述双相高熵陶瓷的制备方法，得到了室温下能够以t相稳定存在的RETaO4陶瓷，使其在室温下也能够产生极高的断裂韧性，同时与t相的高熵氧化锆陶瓷稳定共存，使得最终的材料具有热导率低、热膨胀系数高和硬度高等性能优势，进一步提高了材料的工作温度和应用范围。
Double-phase high-entropy ceramic prepared by combining high-temperature and high-pressure sintering and preparation method of double-phase high-entropy ceramic
The invention discloses double-phase high-entropy ceramic prepared by combining high-temperature and high-pressure sintering and a preparation method of the double-phase high-entropy ceramic. According to the invention, the dual-phase high-entropy ceramic is prepared by combining high-temperature and high-pressure sintering; the dual-phase high-entropy ceramic is composed of t-phase RETaO4 ceramic and t-phase zirconia ceramic; wherein RE specifically refers to Sc, Y and lanthanide rare earth elements, the RETaO4 ceramic capable of stably existing in a t phase at the room temperature is obtained through the preparation method of the double-phase high-entropy ceramic, the RETaO4 ceramic can also generate extremely high fracture toughness at the room temperature, meanwhile, the RETaO4 ceramic stably coexists with t-phase high-entropy zirconia ceramic, and therefore the fracture toughness of the RETaO4 ceramic is greatly improved. The final material has the performance advantages of low thermal conductivity, high thermal expansion coefficient, high hardness and the like, and the working temperature and the application range of the material are further improved.
本发明公开了一种结合高温高压烧结制备的双相高熵陶瓷及其制备方法。本发明通过结合高温高压烧结制备的双相高熵陶瓷，所述双相高熵陶瓷由t相的RETaO4陶瓷以及t相氧化锆陶瓷组成；其中，RE具体为Sc、Y和镧系稀土元素，以及所述双相高熵陶瓷的制备方法，得到了室温下能够以t相稳定存在的RETaO4陶瓷，使其在室温下也能够产生极高的断裂韧性，同时与t相的高熵氧化锆陶瓷稳定共存，使得最终的材料具有热导率低、热膨胀系数高和硬度高等性能优势，进一步提高了材料的工作温度和应用范围。
Double-phase high-entropy ceramic prepared by combining high-temperature and high-pressure sintering and preparation method of double-phase high-entropy ceramic
一种结合高温高压烧结制备的双相高熵陶瓷及其制备方法
FENG JING (Autor:in) / CHEN LIN (Autor:in) / WANG JIANKUN (Autor:in)
29.07.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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