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A platform for research: civil engineering, architecture and urbanism
Graphene toughened ceramic matrix composite material and preparation method thereof
The invention relates to a graphene toughened ceramic matrix composite material and a preparation method thereof. The method comprises the following steps: alternately laminating carbon cloth and foamed nickel sheets, and preparing a prefabricated body by adopting a puncture process after alternately laminating; pyrolytic carbon and graphene are deposited in the prefabricated body through a chemical vapor deposition method, then soaking treatment is conducted in an acid solution, and the porous carbon/carbon composite material with foamed nickel removed is obtained; the oxygen-free hafnium carbide ceramic precursor is used as a reactant, a hafnium carbide interface layer is deposited in the porous carbon/carbon composite material with the foamed nickel removed through a chemical vapor deposition method, and the carbon/carbon composite material with the hafnium carbide interface layer is obtained; and reacting the oxygen-free hafnium carbide ceramic precursor with the carbon/carbon composite material with the hafnium carbide interface layer through an impregnation and pyrolysis method to prepare the graphene toughened ceramic-based composite material. The ceramic-based composite material prepared by the invention has the advantages of high toughness and strong oxidation resistance, and the mechanical property in a high-temperature aerobic environment is obviously improved.
本发明涉及一种石墨烯增韧的陶瓷基复合材料及其制备方法。所述方法：将碳布和泡沫镍片交替叠层，交替叠层后采用穿刺工艺制成预制体；通过化学气相沉积法在预制体中沉积热解碳和石墨烯，然后在酸溶液中浸泡处理，得到去除泡沫镍的多孔碳/碳复合材料；以无氧碳化铪陶瓷前驱体为反应物，通过化学气相沉积法在去除泡沫镍的多孔碳/碳复合材料中沉积碳化铪界面层，得到具有碳化铪界面层的碳/碳复合材料；通过浸渍裂解法将无氧碳化铪陶瓷前驱体与具有碳化铪界面层的碳/碳复合材料反应，制得石墨烯增韧的陶瓷基复合材料。本发明制备的陶瓷基复合材料，具有高韧性和强抗氧化性能的优势，表现为高温有氧环境下的力学性能显著提升。
Graphene toughened ceramic matrix composite material and preparation method thereof
The invention relates to a graphene toughened ceramic matrix composite material and a preparation method thereof. The method comprises the following steps: alternately laminating carbon cloth and foamed nickel sheets, and preparing a prefabricated body by adopting a puncture process after alternately laminating; pyrolytic carbon and graphene are deposited in the prefabricated body through a chemical vapor deposition method, then soaking treatment is conducted in an acid solution, and the porous carbon/carbon composite material with foamed nickel removed is obtained; the oxygen-free hafnium carbide ceramic precursor is used as a reactant, a hafnium carbide interface layer is deposited in the porous carbon/carbon composite material with the foamed nickel removed through a chemical vapor deposition method, and the carbon/carbon composite material with the hafnium carbide interface layer is obtained; and reacting the oxygen-free hafnium carbide ceramic precursor with the carbon/carbon composite material with the hafnium carbide interface layer through an impregnation and pyrolysis method to prepare the graphene toughened ceramic-based composite material. The ceramic-based composite material prepared by the invention has the advantages of high toughness and strong oxidation resistance, and the mechanical property in a high-temperature aerobic environment is obviously improved.
本发明涉及一种石墨烯增韧的陶瓷基复合材料及其制备方法。所述方法：将碳布和泡沫镍片交替叠层，交替叠层后采用穿刺工艺制成预制体；通过化学气相沉积法在预制体中沉积热解碳和石墨烯，然后在酸溶液中浸泡处理，得到去除泡沫镍的多孔碳/碳复合材料；以无氧碳化铪陶瓷前驱体为反应物，通过化学气相沉积法在去除泡沫镍的多孔碳/碳复合材料中沉积碳化铪界面层，得到具有碳化铪界面层的碳/碳复合材料；通过浸渍裂解法将无氧碳化铪陶瓷前驱体与具有碳化铪界面层的碳/碳复合材料反应，制得石墨烯增韧的陶瓷基复合材料。本发明制备的陶瓷基复合材料，具有高韧性和强抗氧化性能的优势，表现为高温有氧环境下的力学性能显著提升。
Graphene toughened ceramic matrix composite material and preparation method thereof
一种石墨烯增韧的陶瓷基复合材料及其制备方法
YANG LIANGWEI (author) / CHEN ZHEMING (author) / FENG SHIJIE (author) / SUN YANAN (author) / HAO NAIRONG (author) / CHEN HAORAN (author) / ZHANG BAOPENG (author) / LIU WEI (author) / LIU JUNPENG (author)
2024-03-12
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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