Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-thermal-expansion-rate high-entropy ceramic material and preparation method thereof
The invention relates to the technical field of high-entropy ceramic materials, in particular to a high-thermal-expansion-rate high-entropy ceramic material and a preparation method thereof. The high-entropy ceramic powder is prepared by taking oxides of trivalent rare earth elements and cerium oxide as raw materials and adopting a mechanical activation and segmented sintering reaction method; the preparation method comprises the following steps: preparing high-entropy ceramic powder, pressing the high-entropy ceramic powder into a wafer, calcining a ceramic blank in a muffle furnace, and cooling along with the furnace after calcining, so that the prepared high-entropy ceramic material is a fluorite phase, and has lower thermal conductivity, good high-temperature phase stability and higher thermal expansion coefficient.
本发明涉及高熵陶瓷材料技术领域，具体涉及一种高热膨胀率高熵陶瓷材料及制备方法。以三价稀土元素的氧化物和氧化铈为原料，采用机械活化，分段烧结反应法制备高熵陶瓷粉体；然后将高熵陶瓷粉末压成圆片，将陶瓷坯体置于马弗炉中煅烧，煅烧结束后随炉冷却，制备的高熵陶瓷材料为萤石相，具有更低的热导率、良好的高温相稳定性和更高的热膨胀系数。
High-thermal-expansion-rate high-entropy ceramic material and preparation method thereof
The invention relates to the technical field of high-entropy ceramic materials, in particular to a high-thermal-expansion-rate high-entropy ceramic material and a preparation method thereof. The high-entropy ceramic powder is prepared by taking oxides of trivalent rare earth elements and cerium oxide as raw materials and adopting a mechanical activation and segmented sintering reaction method; the preparation method comprises the following steps: preparing high-entropy ceramic powder, pressing the high-entropy ceramic powder into a wafer, calcining a ceramic blank in a muffle furnace, and cooling along with the furnace after calcining, so that the prepared high-entropy ceramic material is a fluorite phase, and has lower thermal conductivity, good high-temperature phase stability and higher thermal expansion coefficient.
本发明涉及高熵陶瓷材料技术领域，具体涉及一种高热膨胀率高熵陶瓷材料及制备方法。以三价稀土元素的氧化物和氧化铈为原料，采用机械活化，分段烧结反应法制备高熵陶瓷粉体；然后将高熵陶瓷粉末压成圆片，将陶瓷坯体置于马弗炉中煅烧，煅烧结束后随炉冷却，制备的高熵陶瓷材料为萤石相，具有更低的热导率、良好的高温相稳定性和更高的热膨胀系数。
High-thermal-expansion-rate high-entropy ceramic material and preparation method thereof
一种高热膨胀率高熵陶瓷材料及制备方法
ZHAO XIAOBING (Autor:in) / MA YANG (Autor:in)
26.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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