抄録
The low hardness and weak wear resistance of Ti3SiC2 has been critical problems and preventing the potential use as structural material. It is well known SiC has promising mechanical properties in strength, hardness and wear resistance. Fabricating Ti3SiC2/SiC composites may be one of the possible approaches to utilize the merits of both Ti3SiC2 and SiC. Laminated structure has been proved an effective way to improve fracture toughness and damage resistance of ceramics. Ti3SiC2/SiC composites with different SiC content have been fabricated at 1500 °C and 25MPa by hot pressing (HP). The morphology of the fracture sections has been observed by SEM. The residual thermal stress distribution in the laminated Ti3SiC2/SiC structure has been simulated by FEA. Laminated structure of Ti3SiC2/SiC has been fabricated by HP. The damage resistance behavior of this laminated material was characterized. The mechanism of the crack propagation along the interface between the laminates has been stated.
