Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Multi-element solid solution modified carbon fiber toughened ceramic matrix composite material and preparation method thereof
The invention provides a multi-element solid solution modified carbon fiber toughened ceramic-based composite material and a preparation method thereof, and is applied to the technical field of aerospace materials. The preparation method comprises the following steps: grinding a product obtained after pyrolysis of a (Zr < 0.25 > Hf < 0.25 > Nb < 0.25 > Ta < 0.25 >) C precursor to obtain (Zr < 0.25 > Hf < 0.25 > Nb < 0.25 > Ta < 0.25 >) C powder with a certain particle size; carbon fiber cloth and (Zr < 0.25 > Hf < 0.25 > Nb < 0.25 > Ta < 0.25 >) C powder are alternately laid to weave a carbon fiber preform; then, carrying out vacuum impregnation and pressure impregnation on the carbon fiber preform by utilizing a boric acid ester modified polycarbosilane precursor, and carrying out curing and high-temperature cracking to prepare a ceramic matrix synergistically modified by multi-element solid solution (Zr0. 25Hf0. 25Nb0. 25Ta0. 25) C powder and SiC, so as to realize the preparation of the multi-element solid solution and silicon carbide synergistically modified carbon fiber toughened ceramic matrix composite material. The multielement solid solution and silicon carbide synergistically modified carbon fiber toughened ceramic-based composite material prepared by the invention has good mechanical properties.
本发明提供了一种多元固溶体改性碳纤维增韧陶瓷基复合材料及其制备方法，应用于航空航天材料技术领域。该制备方法包括：对(Zr0.25Hf0.25Nb0.25Ta0.25)C前驱体的高温裂解后的产物进行研磨，得到一定粒径的(Zr0.25Hf0.25Nb0.25Ta0.25)C粉体；将碳纤维布和(Zr0.25Hf0.25Nb0.25Ta0.25)C粉体交替铺层编织碳纤维预制体；随后利用硼酸酯改性的聚碳硅烷前驱体对碳纤维预制体进行真空浸渍和压力浸渍，接着通过固化、高温裂解制备多元固溶体(Zr0.25Hf0.25Nb0.25Ta0.25)C粉体与SiC协同改性的陶瓷基体，实现多元固溶体与碳化硅协同改性碳纤维增韧陶瓷基复合材料的制备。本发明制备的多元固溶体与碳化硅协同改性碳纤维增韧陶瓷基复合材料具有良好的力学性能。
Multi-element solid solution modified carbon fiber toughened ceramic matrix composite material and preparation method thereof
The invention provides a multi-element solid solution modified carbon fiber toughened ceramic-based composite material and a preparation method thereof, and is applied to the technical field of aerospace materials. The preparation method comprises the following steps: grinding a product obtained after pyrolysis of a (Zr < 0.25 > Hf < 0.25 > Nb < 0.25 > Ta < 0.25 >) C precursor to obtain (Zr < 0.25 > Hf < 0.25 > Nb < 0.25 > Ta < 0.25 >) C powder with a certain particle size; carbon fiber cloth and (Zr < 0.25 > Hf < 0.25 > Nb < 0.25 > Ta < 0.25 >) C powder are alternately laid to weave a carbon fiber preform; then, carrying out vacuum impregnation and pressure impregnation on the carbon fiber preform by utilizing a boric acid ester modified polycarbosilane precursor, and carrying out curing and high-temperature cracking to prepare a ceramic matrix synergistically modified by multi-element solid solution (Zr0. 25Hf0. 25Nb0. 25Ta0. 25) C powder and SiC, so as to realize the preparation of the multi-element solid solution and silicon carbide synergistically modified carbon fiber toughened ceramic matrix composite material. The multielement solid solution and silicon carbide synergistically modified carbon fiber toughened ceramic-based composite material prepared by the invention has good mechanical properties.
本发明提供了一种多元固溶体改性碳纤维增韧陶瓷基复合材料及其制备方法，应用于航空航天材料技术领域。该制备方法包括：对(Zr0.25Hf0.25Nb0.25Ta0.25)C前驱体的高温裂解后的产物进行研磨，得到一定粒径的(Zr0.25Hf0.25Nb0.25Ta0.25)C粉体；将碳纤维布和(Zr0.25Hf0.25Nb0.25Ta0.25)C粉体交替铺层编织碳纤维预制体；随后利用硼酸酯改性的聚碳硅烷前驱体对碳纤维预制体进行真空浸渍和压力浸渍，接着通过固化、高温裂解制备多元固溶体(Zr0.25Hf0.25Nb0.25Ta0.25)C粉体与SiC协同改性的陶瓷基体，实现多元固溶体与碳化硅协同改性碳纤维增韧陶瓷基复合材料的制备。本发明制备的多元固溶体与碳化硅协同改性碳纤维增韧陶瓷基复合材料具有良好的力学性能。
Multi-element solid solution modified carbon fiber toughened ceramic matrix composite material and preparation method thereof
一种多元固溶体改性碳纤维增韧陶瓷基复合材料及其制备方法
CHEN HAORAN (Autor:in) / LI XIAODONG (Autor:in) / LIU JUNPENG (Autor:in) / YANG TONG (Autor:in) / ZHU SHEN (Autor:in) / YU XINMIN (Autor:in) / LIU WEI (Autor:in) / FENG SHIJIE (Autor:in) / LIU PENGCHENG (Autor:in) / JING GUILONG (Autor:in)
14.03.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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