Study of thermal explosion parameters for mechanically activated powder mixture titanium – nickel at changing the characteristics of the thermal field

The paper presents the results of an experimental study of thermal explosion characteristics of mechanical oactivated powder mixtures of titanium-nickel. It was found that the changes in the characteristic temperatures at different heating rates are wave-like regardless of the heating rate during the thermal explosion. The correlation of the cyclical changes in the thermal characteristics of the explosion and morphological changes of the powder mixture during mechanical activation was found. Nonmonotonic changes in the behavior of characteristic temperatures are associated with changes in particle powder sizes and layered agglomerates during mechanical activation. An increase in the critical temperature and a decrease in the maximum temperature occurs in the investigated time interval of mechanical activation with an increase in the heating rate in the subsequent thermal explosion. The decreases of the combustion temperature of the titaniunm – nickel activated mixture up to 400°C, and the realization of the synthesis in the solid-phase mode was recorded.