Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-thermal-conductivity high-entropy cerate ceramic material and preparation method thereof
The invention discloses a low-thermal-conductivity high-entropy cerate ceramic material and a preparation method thereof, and belongs to the field of low-thermal-conductivity functional ceramics. The preparation process of the low-thermal-conductivity high-entropy cerate ceramic material comprises the following steps: synthesizing HEC1, HEC2 and HEC3 powder by a sol-gel method, then carrying out compression molding on the prepared powder, and sintering in air to obtain a high-entropy cerate compact ceramic chip. The low-thermal-conductivity and high-entropy cerate ceramic obtained through a sol-gel method is uniform in element distribution and free of impurity phases or precipitated phases, and HEC1, HEC2 and HEC3 are all of a single-phase fluorite type structure and have the characteristics of low thermal conductivity (the thermal conductivity at the temperature of 450 DEG C is 1.62 W m <-1 > K <-1 >, 2.01 W m <-1 > K <-1 > and 1.77 W m <-1 > K <-1 >) and slow grain growth at the high temperature. And the thermal insulation effect can be improved when the material is applied in the thermal insulation field.
本发明公开一种低热导率高熵铈酸盐陶瓷材料及其制备方法，属于低热导率功能陶瓷领域。本发明所述低热导率高熵铈酸盐陶瓷材料的制备过程为：通过溶胶凝胶法合成了HEC1、HEC2、HEC3粉体，然后将所制备的粉体压制成型，再在空气中烧结得到高熵铈酸盐致密陶瓷片。通过溶胶凝胶法得到的该低热导率高熵铈酸盐陶瓷元素分布均匀，不存在杂质相或者析出相，HEC1、HEC2、HEC3均为单相萤石型结构，具有低热导率(450℃时的热导率分别为1.62 W m‑1 K‑1、2.01 W m‑1 K‑1、1.77 W m‑1 K‑1)以及高温下晶粒生长缓慢的特点，在隔热领域内应用时有助于改善隔热效果。
Low-thermal-conductivity high-entropy cerate ceramic material and preparation method thereof
The invention discloses a low-thermal-conductivity high-entropy cerate ceramic material and a preparation method thereof, and belongs to the field of low-thermal-conductivity functional ceramics. The preparation process of the low-thermal-conductivity high-entropy cerate ceramic material comprises the following steps: synthesizing HEC1, HEC2 and HEC3 powder by a sol-gel method, then carrying out compression molding on the prepared powder, and sintering in air to obtain a high-entropy cerate compact ceramic chip. The low-thermal-conductivity and high-entropy cerate ceramic obtained through a sol-gel method is uniform in element distribution and free of impurity phases or precipitated phases, and HEC1, HEC2 and HEC3 are all of a single-phase fluorite type structure and have the characteristics of low thermal conductivity (the thermal conductivity at the temperature of 450 DEG C is 1.62 W m <-1 > K <-1 >, 2.01 W m <-1 > K <-1 > and 1.77 W m <-1 > K <-1 >) and slow grain growth at the high temperature. And the thermal insulation effect can be improved when the material is applied in the thermal insulation field.
本发明公开一种低热导率高熵铈酸盐陶瓷材料及其制备方法，属于低热导率功能陶瓷领域。本发明所述低热导率高熵铈酸盐陶瓷材料的制备过程为：通过溶胶凝胶法合成了HEC1、HEC2、HEC3粉体，然后将所制备的粉体压制成型，再在空气中烧结得到高熵铈酸盐致密陶瓷片。通过溶胶凝胶法得到的该低热导率高熵铈酸盐陶瓷元素分布均匀，不存在杂质相或者析出相，HEC1、HEC2、HEC3均为单相萤石型结构，具有低热导率(450℃时的热导率分别为1.62 W m‑1 K‑1、2.01 W m‑1 K‑1、1.77 W m‑1 K‑1)以及高温下晶粒生长缓慢的特点，在隔热领域内应用时有助于改善隔热效果。
Low-thermal-conductivity high-entropy cerate ceramic material and preparation method thereof
一种低热导率高熵铈酸盐陶瓷材料及其制备方法
MENG BIN (Autor:in) / PING XINYU (Autor:in) / LI CHEN (Autor:in)
30.08.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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