Selective laser sintering of TiC–Al2O3 composite with self-propagating high-temperature synthesis

Self-propagating high-temperature synthesis (SHS) processes have previously been used to manufacture various high strength/temperature materials. A method for combining this process with the selective laser sintering (SLS) of rapid prototype parts has been investigated. TiC–Al2O3 composite has the potential for high wear resistance, high hardness and toughness. By controlling the SHS propagation wave it has been demonstrated possible to produce a complex part manufactured from TiO2, Al and C synthesis utilising the SLS process. This paper reports basic experimental investigation on TiC–Al2O3 composite synthesis and that by varying the amount of diluent within the initial reactants control over the SHS can be achieved through controlled solid state combustion during SLS.