Home – Home – Jornals – Combustion, Explosion and Shock Waves 2025 number 6

A study was conducted to determine the effect of sample length fixation and mechanical activation of the mixture on the combustion rate and elongation of the samples during synthesis, as well as on the phase composition and morphology of the combustion products in the Ti + C system. After activation for 9 min in an AGO-2 mill with an acceleration of 90g using 9 mm diameter steel balls in air, partial mechanochemical synthesis occurred in the mixture, with the TiC product present in addition to the initial Ti and C components. With activation lasting 9 min, the mixture became pyrophoric and, in some cases, ignited upon removal from the activator drum. After mechanical activation lasting less than 9 min, the combustion rate of the mixture increased and the particle size decreased compared to the combustion rate and particle size of the original mixture. With an increase in activation time in the range of up to 9 min, the amount of impurity gases in the mixture increased, which led to an increase in elongation, and at longer times, to the dispersion of the product samples during synthesis. Fixing the sample length significantly increased their combustion rate, but, like mechanical activation of the mixture, did not affect the phase composition of the synthesis products.