International Science and Technology Journal

EHF is an effective heat of formation model. This model can predict the formation of the phases of the compounds. The EHF model determines the effective heat of ΔΗ̍, formation, which depends on the method of selecting the effective concentration of the reacting species in the growth front to be the minimum liquid. The model correctly predicts the first phase during the formation of silicides metal and other binary metal systems. The ability to predict phase sequence formation is clearly demonstrated in silicides systems. The EHF model is also used to explain the effects of impurities and barriers on phase formation. It also shows how the EHF model can be applied to the laser and the induced ionic beam. The EHF model's advantages are to select the minimum liquid composition as a measure of atomic mixing at the interface. It reveals an accurate analysis and comparison of the fundamental differences between them mainly due to the fact that the EHF model benefits from higher temperatures. Then, the effective heat of formation (EHF) model was used successfully for predicting the first phase formation in binary systems