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MAX-phase high-entropy ceramic-based composite material and preparation method thereof
The invention relates to a method for preparing a SiC nanowire strengthened and toughened MAX-phase high-entropy ceramic material-based composite material, and the material prepared by the method. The method comprises the following steps: 1) batching and mixing MAX-phase powder, ball-milling, and performing vacuum drying, wherein the MAX-phase powder is any more than three transition metal MAX-phase carbide powder; 2) pouring SiC nanowires into a dispersion medium containing a dispersion aid, and carrying out ultrasonic dispersion; 3) adding mixed powder obtained in the step 1) into the dispersion liquid obtained in step 2), carrying out magnetic stirring, carrying out vacuum drying, and then sieving; 4) putting the mixed powder obtained in step 3) into a steel mold, and carrying out pre-pressing forming to obtain a ceramic blank; and 5) putting the ceramic blank obtained in step 4) into a graphite mold, and carrying out pressure sintering in a vacuum environment. The SiC nanowires are introduced into the MAX-phase high-entropy ceramic matrix, so that the comprehensive mechanical property of the material is improved.
本发明涉及制备SiC纳米线强韧化MAX相高熵陶瓷材料基复合材料的方法，以及由该方法制备得到的材料。该方法包括步骤：1)将MAX相粉末进行配料混合，进行球磨，然后进行真空干燥，所述MAX相粉末为任意三种以上的过渡金属MAX相碳化物粉末；2)将SiC纳米线倒入含有分散助剂的分散介质中进行超声分散；3)将步骤1得到的混合粉末加入步骤2得到的分散液中进行磁力搅拌，并进行真空干燥，然后过筛；4)将步骤3得到的混合粉末置于钢模中，进行预压成形，得到陶瓷素胚；5)将步骤4得到陶瓷素胚置于将石墨模具中，在真空环境下压力烧结。通过在MAX相高熵陶瓷基体中引入SiC纳米线提升了材料的综合力学性能。
MAX-phase high-entropy ceramic-based composite material and preparation method thereof
The invention relates to a method for preparing a SiC nanowire strengthened and toughened MAX-phase high-entropy ceramic material-based composite material, and the material prepared by the method. The method comprises the following steps: 1) batching and mixing MAX-phase powder, ball-milling, and performing vacuum drying, wherein the MAX-phase powder is any more than three transition metal MAX-phase carbide powder; 2) pouring SiC nanowires into a dispersion medium containing a dispersion aid, and carrying out ultrasonic dispersion; 3) adding mixed powder obtained in the step 1) into the dispersion liquid obtained in step 2), carrying out magnetic stirring, carrying out vacuum drying, and then sieving; 4) putting the mixed powder obtained in step 3) into a steel mold, and carrying out pre-pressing forming to obtain a ceramic blank; and 5) putting the ceramic blank obtained in step 4) into a graphite mold, and carrying out pressure sintering in a vacuum environment. The SiC nanowires are introduced into the MAX-phase high-entropy ceramic matrix, so that the comprehensive mechanical property of the material is improved.
本发明涉及制备SiC纳米线强韧化MAX相高熵陶瓷材料基复合材料的方法，以及由该方法制备得到的材料。该方法包括步骤：1)将MAX相粉末进行配料混合，进行球磨，然后进行真空干燥，所述MAX相粉末为任意三种以上的过渡金属MAX相碳化物粉末；2)将SiC纳米线倒入含有分散助剂的分散介质中进行超声分散；3)将步骤1得到的混合粉末加入步骤2得到的分散液中进行磁力搅拌，并进行真空干燥，然后过筛；4)将步骤3得到的混合粉末置于钢模中，进行预压成形，得到陶瓷素胚；5)将步骤4得到陶瓷素胚置于将石墨模具中，在真空环境下压力烧结。通过在MAX相高熵陶瓷基体中引入SiC纳米线提升了材料的综合力学性能。
MAX-phase high-entropy ceramic-based composite material and preparation method thereof
一种MAX相高熵陶瓷基复合材料及其制备方法
ZHONG ZHIHONG (author) / LIU CHENGYOU (author) / GAO FENG (author) / LIN LIJING (author) / CHEN CHANG (author) / WU YUCHENG (author)
2021-12-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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