Thermodynamics of Chemical and Electrochemical Stability of Fe – Ge System Alloys

The standard Gibbs energies of formation of intermatallides Fe<sub>6</sub>Ge<sub>5</sub>, FeGe, FeGe<sub>2</sub> were estimated. Thermodynamic properties of α- and β- solid metallic solutions of Fe – Ge system and spinel solutions of Fe<sub>3</sub>O<sub>4</sub> – Fe<sub>2</sub>GeO<sub>4</sub> system were determined. The state diagram of Fe – Ge – O system and the potential – рН diagram of Fe – Ge – H<sub>2</sub>O system at 25ºС were plotted. The thermodynamic features of the corrosion-electrochemical behaviour of Fe – Ge system was discussed