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Interface-modified ceramic-based composite material and preparation method thereof
The invention relates to an interface modified ceramic matrix composite material and a preparation method thereof. The method comprises the following steps: providing continuous carbon fibers; spraying the graphene oxide solution on the surface of the continuous carbon fiber, performing low-temperature treatment, and sequentially repeating spraying and low-temperature treatment for at least one time to form a graphene oxide interface layer on the surface of the continuous carbon fiber; weaving the continuous carbon fiber into a preform structure, and performing thermal reduction treatment on the preform structure to obtain a carbon fiber preform with a graphene interface layer on the surface of the carbon fiber; depositing a pyrolytic carbon interface layer on the graphene interface layer of the carbon fiber of the carbon fiber preform through a chemical vapor deposition method to obtain a porous C/C substrate; and enabling the ceramic precursor solution to react with the porous C/C matrix through an impregnation and pyrolysis method, so as to prepare the interface modified ceramic matrix composite material. According to the method disclosed by the invention, the advantages of the graphene are fully exerted, and the graphene is converted into the graphene interface layer through spraying thermal reduction, so that the problem of relatively poor toughness of the ceramic-based composite material is effectively solved.
本发明涉及一种界面改性的陶瓷基复合材料及其制备方法。所述方法：提供连续碳纤维；将氧化石墨烯溶液喷涂于连续碳纤维的表面并进行低温处理，依次重复喷涂和低温处理至少一次，在连续碳纤维表面形成氧化石墨烯界面层；并采用该连续碳纤维编织成预制体结构，将预制体结构进行热还原处理，得到碳纤维表面具有石墨烯界面层的碳纤维预制体；通过化学气相沉积法在碳纤维预制体的碳纤维的石墨烯界面层上沉积热解碳界面层，得到多孔C/C基体；通过浸渍裂解法将陶瓷前驱体溶液与多孔C/C基体反应，制得界面改性的陶瓷基复合材料。本发明方法充分发挥了石墨烯优势，通过喷涂热还原转化为石墨烯界面层，从而有效解决了陶瓷基复合材料韧性较差的问题。
Interface-modified ceramic-based composite material and preparation method thereof
The invention relates to an interface modified ceramic matrix composite material and a preparation method thereof. The method comprises the following steps: providing continuous carbon fibers; spraying the graphene oxide solution on the surface of the continuous carbon fiber, performing low-temperature treatment, and sequentially repeating spraying and low-temperature treatment for at least one time to form a graphene oxide interface layer on the surface of the continuous carbon fiber; weaving the continuous carbon fiber into a preform structure, and performing thermal reduction treatment on the preform structure to obtain a carbon fiber preform with a graphene interface layer on the surface of the carbon fiber; depositing a pyrolytic carbon interface layer on the graphene interface layer of the carbon fiber of the carbon fiber preform through a chemical vapor deposition method to obtain a porous C/C substrate; and enabling the ceramic precursor solution to react with the porous C/C matrix through an impregnation and pyrolysis method, so as to prepare the interface modified ceramic matrix composite material. According to the method disclosed by the invention, the advantages of the graphene are fully exerted, and the graphene is converted into the graphene interface layer through spraying thermal reduction, so that the problem of relatively poor toughness of the ceramic-based composite material is effectively solved.
本发明涉及一种界面改性的陶瓷基复合材料及其制备方法。所述方法：提供连续碳纤维；将氧化石墨烯溶液喷涂于连续碳纤维的表面并进行低温处理，依次重复喷涂和低温处理至少一次，在连续碳纤维表面形成氧化石墨烯界面层；并采用该连续碳纤维编织成预制体结构，将预制体结构进行热还原处理，得到碳纤维表面具有石墨烯界面层的碳纤维预制体；通过化学气相沉积法在碳纤维预制体的碳纤维的石墨烯界面层上沉积热解碳界面层，得到多孔C/C基体；通过浸渍裂解法将陶瓷前驱体溶液与多孔C/C基体反应，制得界面改性的陶瓷基复合材料。本发明方法充分发挥了石墨烯优势，通过喷涂热还原转化为石墨烯界面层，从而有效解决了陶瓷基复合材料韧性较差的问题。
Interface-modified ceramic-based composite material and preparation method thereof
一种界面改性的陶瓷基复合材料及其制备方法
YANG LIANGWEI (author) / YANG TONG (author) / JING GUILONG (author) / HAO NAIRONG (author) / SUN YANAN (author) / LIU WEI (author) / YU XINMIN (author) / SUN TONGCHEN (author)
2023-02-24
Patent
Electronic Resource
Chinese
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