Abstract
The combustion synthesis of the TiAl intermetallic compound was investigated. The raw Ti/Al powder was prepared from elemental Ti and Al powder with controlling of the Ti/Al ratio. The Ni/Al (Ni/Al ratio = 1) was added to the raw Ti/Al powder as the sintering additive. The compacts made from the mixed powder were reacted by the thermal explosion combustion synthesis. The mechanical properties of the synthesized products were measured in the range of the Ti/Al ratio from 0.67 to 9.00.
The measurements of the density, the phases, the microstructure and the size accuracy of the products revealed that a good performance with high density and fine micro structures was obtainable when the Ti/Al ratio was in the range from 1.00 to 1.22. Effect of the quantity of the Ni/Al additive on the density of the products was also examined.
