Thermal Imaging Studies of the SHS Preparation of MgFe2O4

Rapid capture thermal images have been recorded for the self-propagating hightemperature synthesis (SHS) preparation of MgFe 2O4. As the SHS wave moved through the bulk of a prepared pellet consisting of a mixture of Fe, Fe2O3, MgO, and NaClO4, images were captured in real time. Reaction temperatures in excess of 1265 °C were observed, and a propagation wave with Gaussian-like isothermal properties was observed to move through the bulk of the pellet. Surface heat islands were also observed, probably resulting from inhomogeneities in the green mixture.