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 modelling of the inert gas release during thermal decomposition of solids are presented. The updated model supposing three components in the solid-state reaction system including the formation of an intermediate metastable component on the surface of the newly formed component was proposed for the modelling 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 nucleation mechanism was considered in the modelling. The model can be used in modelling ETA curves of solid-solid, solid-gas and solid-liquid interactions where the existence of metastable intermediate component is supposed.