Theory of emanation thermal analysis IX. Inert gas release during thermal decomposition of solids

In the Emanation Thermal Analysis the release of inert gas atoms previously incorporated in the sample is measured. Results of the statistical modelli ng of the inert gas release during thermal decomposition of solids are pres ented. The updated model supposing three components in the solid-state reac tion system including the formation of an intermediate metastable component on the surface of the newly formed component was proposed for the modellin g of the ETA curves. The release of inert gas atoms previously incorporated into the sample is used as a probe of microstructure changes. The random n ucleation mechanism was considered in the modelling. The model can be used in modelling ETA curves of solid-solid, solid-gas and solid-liquid interact ions where the existence of metastable intermediate component is supposed.