Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Novel fiber-toughened ceramic-based composite material and preparation method and application thereof
The invention discloses a novel fiber-toughened ceramic-based composite material and a preparation method and application thereof. The novel fiber-toughened ceramic-based composite material comprises a matrix and a reinforcing and toughening phase, the matrix is a ceramic material, the reinforcing and toughening phase is fiber, the surface of the fiber is provided with a layered RExSiyCz interface layer, and RE comprises Sc, Y and lanthanide elements. The lanthanide element silicon carbide is used as an interface layer of the fiber-reinforced ceramic matrix composite material, and fracture energy absorption mechanisms such as crack deflection, interlayer tearing, interlayer slippage and lamellar crystal wrinkles are generated on an interface by utilizing a unique layered structure of the lanthanide element silicon carbide, so that the expansion of cracks in the composite material can be effectively inhibited, and thus the fracture toughness of the composite material can be effectively improved. The interface layer material lanthanide element silicon carbide adopted by the invention has excellent high temperature resistance, oxidation resistance and corrosion resistance, and the obtained ceramic-based composite material can be applied to extreme service environments such as aerospace and nuclear energy systems.
本发明公开了一种新型纤维增韧陶瓷基复合材料、其制备方法与应用。所述新型纤维增韧陶瓷基复合材料包括基体和增强增韧相，所述基体为陶瓷材料，所述增强增韧相为纤维，并且，所述纤维表面具有层状RExSiyCz界面层，RE包括Sc、Y及镧系元素。本发明将镧系元素硅碳化物作为纤维增强陶瓷基复合材料的界面层，利用其独特的层状结构，在界面产生裂纹偏转、层间撕裂、层间滑移、片状晶褶皱等断裂能吸收机制，可有效抑制裂纹在复合材料内部的扩展，从而可有效提高复合材料的断裂韧性。本发明所采用的界面层材料镧系元素硅碳化物具有优异的耐高温耐氧化耐腐蚀性能，所获得的陶瓷基复合材料可应用在航空航天及核能系统等极端服役环境中。
Novel fiber-toughened ceramic-based composite material and preparation method and application thereof
The invention discloses a novel fiber-toughened ceramic-based composite material and a preparation method and application thereof. The novel fiber-toughened ceramic-based composite material comprises a matrix and a reinforcing and toughening phase, the matrix is a ceramic material, the reinforcing and toughening phase is fiber, the surface of the fiber is provided with a layered RExSiyCz interface layer, and RE comprises Sc, Y and lanthanide elements. The lanthanide element silicon carbide is used as an interface layer of the fiber-reinforced ceramic matrix composite material, and fracture energy absorption mechanisms such as crack deflection, interlayer tearing, interlayer slippage and lamellar crystal wrinkles are generated on an interface by utilizing a unique layered structure of the lanthanide element silicon carbide, so that the expansion of cracks in the composite material can be effectively inhibited, and thus the fracture toughness of the composite material can be effectively improved. The interface layer material lanthanide element silicon carbide adopted by the invention has excellent high temperature resistance, oxidation resistance and corrosion resistance, and the obtained ceramic-based composite material can be applied to extreme service environments such as aerospace and nuclear energy systems.
本发明公开了一种新型纤维增韧陶瓷基复合材料、其制备方法与应用。所述新型纤维增韧陶瓷基复合材料包括基体和增强增韧相，所述基体为陶瓷材料，所述增强增韧相为纤维，并且，所述纤维表面具有层状RExSiyCz界面层，RE包括Sc、Y及镧系元素。本发明将镧系元素硅碳化物作为纤维增强陶瓷基复合材料的界面层，利用其独特的层状结构，在界面产生裂纹偏转、层间撕裂、层间滑移、片状晶褶皱等断裂能吸收机制，可有效抑制裂纹在复合材料内部的扩展，从而可有效提高复合材料的断裂韧性。本发明所采用的界面层材料镧系元素硅碳化物具有优异的耐高温耐氧化耐腐蚀性能，所获得的陶瓷基复合材料可应用在航空航天及核能系统等极端服役环境中。
Novel fiber-toughened ceramic-based composite material and preparation method and application thereof
新型纤维增韧陶瓷基复合材料、其制备方法与应用
ZHOU XIAOBING (Autor:in) / ZOU SHUNRUI (Autor:in) / HUANG ZHENGREN (Autor:in) / HUANG QING (Autor:in)
10.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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