Ti/C laminated material prepared by spark plasma sintering method and its mechanical property

The laminated structure of the Ti/C composite materials with the sheet of Ti and C as raw materials was prepared by spark plasma sintering (SPS) technology. Microstructure and room temperature mechanical properties of laminated material were studied at different sintering temperatures. The results show that the layer thickness increases with the sintering temperature. When the sintering temperature reaches 1500℃, the layer thickness is up to 32.6 μm. Ti will be partially melted when the sintering temperature is higher than 1500℃ and the Ti/C laminated composite material can’t be obtained. When the sintering temperature reaches 1500℃ and 1510℃, the laminated composite bending strength and fracture power reach the maximum value of 1571.51 MPa and 215.09×10³ J/m², respectively. The crack propagation of Ti/C laminated material includes the crack deflection, crack parallel expansion and bifurcation of the crack tip passive, and these expansion pathes are the main toughening mechanism.