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High-entropy ceramic block and preparation method thereof
The invention relates to the technical field of ultrahigh-temperature ceramic composite materials, and discloses a high-entropy ceramic block and a preparation method thereof.The preparation method comprises the steps that amorphous ceramic powder is prepared, specifically, mixed powder of multiple single-component carbides is subjected to ball milling, and the amorphous ceramic powder with uniform components is obtained; preparing a carbon-containing ceramic green body: mixing the amorphous ceramic powder with a carbon source to obtain carbon-containing mixed powder, and preparing the mixed powder into the carbon-containing ceramic green body for reactive infiltration through a tabletting process and a slurry settling process; forming the high-entropy ceramic in situ through a melt infiltration method: putting the carbon-containing ceramic blank into a graphite crucible or a graphite paper box, and embedding by using transition metal or alloy thereof; and after infiltration is completed, residual alloy on the surface is polished, and a compact high-entropy ceramic block is obtained.
本申请涉及超高温陶瓷复合材料技术领域，公开一种高熵陶瓷块体及其制备方法，其中，所述制备方法，包括：制备非晶态陶瓷粉体：将多种单组元碳化物混合粉末进行球磨，得到成分均匀的非晶态陶瓷粉体；制备含碳陶瓷坯体：将非晶态陶瓷粉体与碳源混合得到含碳混合粉体，将混合粉体通过压片工艺和浆料沉降工艺制成可供反应熔渗的含碳陶瓷坯体；通过熔体渗透法原位形成高熵陶瓷：将含碳陶瓷坯体置于石墨坩埚或石墨纸盒中，使用过渡金属或其合金进行包埋；熔渗完成后打磨表面残余合金，得到致密的高熵陶瓷块体。
High-entropy ceramic block and preparation method thereof
The invention relates to the technical field of ultrahigh-temperature ceramic composite materials, and discloses a high-entropy ceramic block and a preparation method thereof.The preparation method comprises the steps that amorphous ceramic powder is prepared, specifically, mixed powder of multiple single-component carbides is subjected to ball milling, and the amorphous ceramic powder with uniform components is obtained; preparing a carbon-containing ceramic green body: mixing the amorphous ceramic powder with a carbon source to obtain carbon-containing mixed powder, and preparing the mixed powder into the carbon-containing ceramic green body for reactive infiltration through a tabletting process and a slurry settling process; forming the high-entropy ceramic in situ through a melt infiltration method: putting the carbon-containing ceramic blank into a graphite crucible or a graphite paper box, and embedding by using transition metal or alloy thereof; and after infiltration is completed, residual alloy on the surface is polished, and a compact high-entropy ceramic block is obtained.
本申请涉及超高温陶瓷复合材料技术领域，公开一种高熵陶瓷块体及其制备方法，其中，所述制备方法，包括：制备非晶态陶瓷粉体：将多种单组元碳化物混合粉末进行球磨，得到成分均匀的非晶态陶瓷粉体；制备含碳陶瓷坯体：将非晶态陶瓷粉体与碳源混合得到含碳混合粉体，将混合粉体通过压片工艺和浆料沉降工艺制成可供反应熔渗的含碳陶瓷坯体；通过熔体渗透法原位形成高熵陶瓷：将含碳陶瓷坯体置于石墨坩埚或石墨纸盒中，使用过渡金属或其合金进行包埋；熔渗完成后打磨表面残余合金，得到致密的高熵陶瓷块体。
High-entropy ceramic block and preparation method thereof
一种高熵陶瓷块体及其制备方法
CAO YEJIE (author) / SONG YUYU (author) / LIU YONGSHENG (author) / SHAO XIONGJIAN (author) / XIA YURAN (author)
2024-06-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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