Mechanical properties of bulk Ti3SiC2 synthesized by a hot press sintering

Abstract

Nano laminated bulk Ti3SiC2 was synthesized by hot press process using TiCx/Si powder mixture at the temperature range of 1300°C- 15000C. pure Ti3SiC2 was synthesized by a hot pressing above 1400°C, while unreacted TiCx were remained in bulk Ti 3SiC2 which synthesized below 1400°C. The sintering density of bulk Ti3SiC2 were varied with the amount of TiCx. It was found that the mechanical properties and micro structures of bulk Ti3SiC2 were closely related to the amounts of TiCx which was controlled by the hot pressing temperature. The TiCx increase the flexural strength of bulk Ti3SiC2, while the fracture toughness and thermal shock resistance of bulk Ti3SiC2 were decreased with the content of TiCx. The plastic deformations of bulk Ti 3SiC2 were appeared above 1000°C.