Abstract
The microstructures and morphologies of Fe–Zn alloys electrodeposited at different chloride bath compositions have been studied in detail by using TEM, SEM, XRD, and compared to those appearing in the Fe–Zn thermal equilibrium phase diagram. The results indicate that the α, Γ, Γ1 and η phases appear in the Fe–Zn electrodeposits, whereas δ and ζ phases which appear in the thermal equilibrium phase diagram do not appear. The surface appearance and microstructure of the intermetallic phases in Fe–Zn alloy electrodeposits depend on the Zn content in the Fe–Zn alloy deposit. It was also found that there is an orientation relationship among the Γ, Γ1 and η phases when these three phases appear simultaneously.
