Ignition of condensed systems interacting through a layer of high-melting product

The functional dependence of the ignition delay time on the main parameters of the problem is determined for condensed systems interacting through a layer of high-melting product by a power law. A formula for determining the ignition temperature from the equality between the external heat flux and integral heat evolution in a chemical reaction in a stationary combustion wave with temperature equal to the ignition temperature is proposed and substantiated. It is shown that at a surface temperature below the ignition temperature the heating can be considered inert and the duration of this stage makes up the bulk of the delay time.