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SiC nanowire reinforced oxide ceramic-based composite material and preparation method thereof
The invention belongs to the field of oxide ceramic-based composite materials, and particularly provides a SiC nanowire reinforced oxide ceramic-based composite material and a preparation method thereof. The SiC nanowire reinforced oxide ceramic-based composite material, which is prepared from a SiC nanowire reinforced Mullite-Al2O3 matrix, an aluminum oxide fiber preform and a LaPO4 interface phase. The preparation method comprises the following steps: weaving alumina fibers into a three-dimensional preform, preparing a LaPO4 interface by a sol-gel method, preparing SiC nanowires in the fiber preform with the interface by a chemical vapor infiltration method, preparing a Mullite-Al2O3 matrix by the chemical vapor infiltration method, and finally preparing the composite material. The invention provides a proper weak bonding interface, which has enough damage tolerance between fiber and a matrix, and can be used for preparing a high-density matrix at a low temperature, so that the fracture work and fracture strain of the composite material can be improved while the fiber damage is reduced, and the requirements of the aerospace field on high-performance materials can be met.
本发明属于氧化物陶瓷基复合材料领域，具体提供一种SiC纳米线增强氧化物陶瓷基复合材料及其制备方法。本发明的一种SiC纳米线增强氧化物陶瓷基复合材，包括：SiC纳米线增强的Mullite‑Al2O3基体、氧化铝纤维预制体以及LaPO4界面相组成。制备方法包括以下步骤：将氧化铝纤维编织成三维预制体，经溶胶‑凝胶法制备LaPO4界面后，以化学气相渗透法在带有界面的纤维预制体中制备SiC纳米线，再同样采用化学气相渗透法制备Mullite‑Al2O3基体，最终制得复合材料。本发明提供一种可在纤维与基体间具有足够损伤容限的适当弱结合界面且以低温制备高致密度基体，在减少纤维损伤的同时还能提高复合材料的断裂功和断裂应变，能满足航空航天领域对高性能材料的需求。
SiC nanowire reinforced oxide ceramic-based composite material and preparation method thereof
The invention belongs to the field of oxide ceramic-based composite materials, and particularly provides a SiC nanowire reinforced oxide ceramic-based composite material and a preparation method thereof. The SiC nanowire reinforced oxide ceramic-based composite material, which is prepared from a SiC nanowire reinforced Mullite-Al2O3 matrix, an aluminum oxide fiber preform and a LaPO4 interface phase. The preparation method comprises the following steps: weaving alumina fibers into a three-dimensional preform, preparing a LaPO4 interface by a sol-gel method, preparing SiC nanowires in the fiber preform with the interface by a chemical vapor infiltration method, preparing a Mullite-Al2O3 matrix by the chemical vapor infiltration method, and finally preparing the composite material. The invention provides a proper weak bonding interface, which has enough damage tolerance between fiber and a matrix, and can be used for preparing a high-density matrix at a low temperature, so that the fracture work and fracture strain of the composite material can be improved while the fiber damage is reduced, and the requirements of the aerospace field on high-performance materials can be met.
本发明属于氧化物陶瓷基复合材料领域，具体提供一种SiC纳米线增强氧化物陶瓷基复合材料及其制备方法。本发明的一种SiC纳米线增强氧化物陶瓷基复合材，包括：SiC纳米线增强的Mullite‑Al2O3基体、氧化铝纤维预制体以及LaPO4界面相组成。制备方法包括以下步骤：将氧化铝纤维编织成三维预制体，经溶胶‑凝胶法制备LaPO4界面后，以化学气相渗透法在带有界面的纤维预制体中制备SiC纳米线，再同样采用化学气相渗透法制备Mullite‑Al2O3基体，最终制得复合材料。本发明提供一种可在纤维与基体间具有足够损伤容限的适当弱结合界面且以低温制备高致密度基体，在减少纤维损伤的同时还能提高复合材料的断裂功和断裂应变，能满足航空航天领域对高性能材料的需求。
SiC nanowire reinforced oxide ceramic-based composite material and preparation method thereof
一种SiC纳米线增强氧化物陶瓷基复合材料及其制备方法
YANG LIXIA (author) / ZHONG BOFENG (author) / ZHANG JUNXIONG (author) / CHEN ZHAOFENG (author) / LIAO JIAHAO (author) / KOU ZONGDE (author)
2022-01-18
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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