Estimation of the maximum transverse size of multilayer bimetallic films for self-propagating high-temperature synthesis for the Ni/Al structure as an example

Self-propagating high-temperature synthesis (solid-flame combustion) is simulated based on a layered model in which the product is formed between the layers of initial reactants due to solid-phase diffusion in nonisothermal conditions; in this case, the combustion wave propagates along these layers. It is found that cords of thickness up to 50 $\mu$m made of aluminium and nickel layers are fully converted into high-temperature melt. The results of calculation make it possible to optimize processes of welding and soldering of thermosensitive materials and parts of electronic components of various devices.