Microstructure Characterisation and Mechanical Behaviour of 2D C/SiC-C Composite with SiC/PyC Multilayer Matrix

Zhi Xin Meng; Lai Fei Cheng; Qiao Mu Liu; Xiu Feng Han; Li Tong Zhang

doi:10.4028/www.scientific.net/AMR.194-196.1789

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Microstructure Characterisation and Mechanical Behaviour of 2D C/SiC-C Composite with SiC/PyC Multilayer Matrix

Abstract:

Two composites of 2D C/SiC-C and 2D C/SiC were fabricated by isothermal-isobaric chemical vapor infiltration (ICVI). The microstructures and mechanical behaviors at room temperature were characterized and investigated, respectively. In the 2D C/SiC-C composite, the PyC matrix layers are homogeneous and continuous. Moreover, the matrix layers of SiC and PyC bond well and almost no microcracks are found in the multilayered matrix. Compared with the 2D C/SiC composite, the 2D C/SiC-C composite exihibits improved mechanical properties.The successive extraction of matrix layers and multiple deflections of cracks in the SiC/PyC multilayered matrix contribute to the improvement of mechanical properties.