Abstract
The synthesis of Ti3SiC2 powder by mechanical alloying (MA) from elemental Ti, Si and C powders and evaluation of some properties of the sintered compacts of the MA powder were conducted. MA was carried out by vibratory ball milling and planetary ball milling. The influence of parameters, such as running time, ball size and rotation speed on MA powder were examined. The annealing of the MA powder was done at various temperatures and holding times. The MA powders could be sintered to dense Ti3SiC2-based ceramics which contained TiC as a secondary phase. Mechanical, thermal and electrical properties of sintered compacts were evaluated. The Ti3SiC2-based compact showed low hardness, high Young's modulus, and plastic behavior at high temperatures over 1373 K, And the compact showed high thermal expansion, high thermal conductivity, and higher electrical conductivity than other conventional ceramics.
