Abstract

AbstractThe formation of cementite, Fe3C, from thin iron foils has been studied at 550 and 650 °C by means of in‐situ Mössbauer spectroscopy. At 550 °C, the kinetics of the reaction have been determined from time‐resolved experiments performed at different carbon activities. The product formation follows a two‐step process exhibiting two different kinetic regimes. The slow initial stages of the reaction as well as its rapid final part can be described by an Avrami‐type kinetics with a characteristic parameter of n = 3/2.

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