COMBUSTION SYNTHESIS OF MOSI2-WSI2 ALLOYS

Thermochemical calculations were carried out for the self-propagating high temperature synthesis (SHS) of MoSi2-WSi2 alloys. Adiabatic tempe ratures and amounts of liquid phase of MoSi2 and WSi2 formed were calc ulated at various initial temperatures for the reactions forming MoSi2 , WSi2 and their alloys. These alloys were prepared using elemental po wders of Mo, W and Si by the thermal explosion mode of SHS. The produc ts were characterized by X-rav diffraction and scanning electron micro scopy. The morphologies of the alloys are explained with the help of t he thermomechanical calculations.