Abstract

Miedema's model is a semi-empirical model which predicts the formation enthalpy of intermetallic compounds, solid solutions, and amorphous phases. In this work, the Miedema's model was used as an approach to predict compound dissociation in a metallic matrix during a homogenization process. For this purpose, the Fe-SiC system was used as a case study. Samples with five different SiC contents were prepared (5, 10, 15, 20 and 25 wt%) using a powder metallurgy technique. The results showed that the reaction between Fe and SiC resulted mainly in the formation of graphite and a solid solution between Fe and Si. In addition, the methodology used was suitable to predict the compound's dissociation within the matrix and to estimate the maximum amount that can be dissociated in this system.