Heat loss reduction in combustion of Cu(Ni)–Al powder systems due to their microstructural transformation

The paper reviews published data on structural–phase changes in Cu–Al and Ni–Al metal powders during in situ combustion. The heat-conservation properties of various structures located around reactive cells in the combustion wave zone are revealed. The mechanism providing for nearly adiabatic combustion conditions is discussed and a microstructural model for this mechanism is justified.