Home – Home – Jornals – Combustion, Explosion and Shock Waves 2024 number 4

The influence of mechanical activation and amount of Fe + Co + Cr binder on the combustion rate and maximum temperature, sample elongation during combustion, composite particle size and mixture yield after activation, phase composition and morphology of synthesis products in the Ni-Al-(Fe-Co-Cr) system was studied. Mechanical activation of the Ni + Al + x(Fe + Co + Cr) mixture allowed the samples to burn at room temperature with a Fe + Co + Cr binder content of up to 40%. Activation of the mixtures increased the combustion rate and temperature, sample elongation and porosity, and decreased their strength. An increase in the Fe + Co + Cr binder content in the activated Ni + Al + x(Fe + Co + Cr) mixture led to an increase in the mixture yield after mechanical activation, a decrease in the composite particle size and an elongation of the synthesis product samples. The dependence of the combustion rate of activated mixtures on the content of the Fe + Co + Cr binder is non-monotonic, and has a maximum at a binder content of 10%. High-entropy alloys - solid solutions based on intermetallic compounds NiAl and Ni₃Al - were synthesized by the SHS method.