SiC particles and dimple are present in the fracture of the tensile specimen of SiC P/MB 2 composites,there is interfacial debonding between the SiC particles and the matrix in the tensile fracture at the elevated temperature.

• 复合材料的拉伸试样断口存在SiC颗粒和韧窝，高温拉伸试样断口存在界面脱粘。