Influence of proteins on the corrosion of a conventional and selective laser beam melted FeMn alloy in physiological electrolytes

The role of proteins on the corrosion of selective laser beam melted and a conventional processed cold-rolled FeMn alloy as well as hot-rolled pure iron was investigated in modified simulated body fluid (m-SBF). The corrosion behavior of Fe-alloys was analyzed by electrochemical impedance spectroscopy, atomic force microscopy as well as infrared and Raman spectroscopy. The comparative analysis of these alloys allowed for a differentiation in effects of chemical composition and microstructure. Related corrosion kinetics could be clearly correlated with film formation in m-SBF electrolytes in the presence and absence of lysozyme and bovine serum albumin.