Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of gradient antioxidant SiC/SiC composite material
The invention discloses a preparation method of a gradient anti-oxidation SiC/SiC composite material, and belongs to the field of aerospace material preparation processes. On the basis of preparing a SiC/SiC composite material by a traditional PIP process, a gradient ultra-high-temperature ceramic layer is prepared on the surface layer of the composite material by virtue of capillary action by locally introducing a low-viscosity ultra-high-temperature ceramic precursor, so that the problem of insufficient high-temperature oxidation environment performance of the traditional SiC/SiC composite material is solved; the mechanical strength, oxidation resistance and scouring resistance of the composite material at the temperature of 1400 DEG C or above are improved, and meanwhile, the gradient structure can retain the advantages of low density and high strength of the SiC/SiC composite material.
本发明公开一种梯度抗氧化SiC/SiC复合材料制备方法，属于航空航天材料制备工艺领域。在传统PIP工艺制备SiC/SiC复合材料的基础上，通过局部引入低粘度的超高温陶瓷前驱体，依靠毛细作用在复合材料表层制备一层梯度的超高温陶瓷层，克服传统SiC/SiC复合材料高温氧化环境性能不足的问题，提升复合材料在1400℃以上的力学强度和抗氧化耐冲刷性能，同时梯度结构能保留SiC/SiC复合材料低密度、高强度的优势。
Preparation method of gradient antioxidant SiC/SiC composite material
The invention discloses a preparation method of a gradient anti-oxidation SiC/SiC composite material, and belongs to the field of aerospace material preparation processes. On the basis of preparing a SiC/SiC composite material by a traditional PIP process, a gradient ultra-high-temperature ceramic layer is prepared on the surface layer of the composite material by virtue of capillary action by locally introducing a low-viscosity ultra-high-temperature ceramic precursor, so that the problem of insufficient high-temperature oxidation environment performance of the traditional SiC/SiC composite material is solved; the mechanical strength, oxidation resistance and scouring resistance of the composite material at the temperature of 1400 DEG C or above are improved, and meanwhile, the gradient structure can retain the advantages of low density and high strength of the SiC/SiC composite material.
本发明公开一种梯度抗氧化SiC/SiC复合材料制备方法，属于航空航天材料制备工艺领域。在传统PIP工艺制备SiC/SiC复合材料的基础上，通过局部引入低粘度的超高温陶瓷前驱体，依靠毛细作用在复合材料表层制备一层梯度的超高温陶瓷层，克服传统SiC/SiC复合材料高温氧化环境性能不足的问题，提升复合材料在1400℃以上的力学强度和抗氧化耐冲刷性能，同时梯度结构能保留SiC/SiC复合材料低密度、高强度的优势。
Preparation method of gradient antioxidant SiC/SiC composite material
一种梯度抗氧化SiC/SiC复合材料制备方法
SONG HUANJUN (Autor:in) / CHEN HAORAN (Autor:in) / YANG LIANGWEI (Autor:in) / JIN XIN (Autor:in) / LI XIAODONG (Autor:in) / ZUO HONGJUN (Autor:in) / LIU WEI (Autor:in) / YU XINMIN (Autor:in) / LIU JUNPENG (Autor:in) / SUN TONGCHEN (Autor:in)
31.01.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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