EFFECT OF FABRICATION PARAMETERS ON SYNTHESIS OF Ti2AlC AND Ti3AlC2 MAX PHASES BY MASHS

Mechanically activated self-propagating high temperature synthesis (mashs) is the method which is usedto promote self-propagating synthesis by increasing activity of reactants and increase the purity of products. in thisstudy ti2alc and ti3alc2 max phases were synthesized by using mechanically activated self-propagating hightemperature synthesis (mashs) and samples reactivity and phase structure of samples was studied. this process wasperformed by combination of short duration ball milling (ma) of reactants (ti, al and c as raw materials) and selfpropagatinghigh temperature synthesis (shs) by microwave or furnace. mixtures of ti/al/c by mole ratio of 2:1:1and 3:1:2 were milled for 2h., then exothermic reaction was initiated in microwave or high temperature furnace andtheir reaction behavior and structure have been investigated by dta and xrd. results revealed that it’s possible tofabricate these materials by mashs method but purity of them depends on type of reaction condition. dta and xrdanalyses proved that increasing of soaking time did not improve purity of compounds and some impurities such as ticwould be formed in non-optimized reaction routes.