THE APPLICABILITY OF THE SESTAK-BERGGREN KINETIC-EQUATION IN CONSTANT RATE THERMAL-ANALYSIS (CRTA)

The applicability of the Šesták-Berggren (SB) formal kinetic model in CRTA is discussed with respect to the most common kinetic models in solid state kinetics. It was found that the CRTA curves for both the SB and Johnson-Mehl-Avrami (JMA) models exhibit similarities with respect to maxima or inflex points. It has been shown that the experimental CRTA and TG data of the decomposition of nickel nitrate can be described by both the SB and JMA models. It seems, however, that the SB model is more suitable for a quantitative description of the process studied. © 1990.