A supersaturated solid solution of Fe-25at%Sn was produced by mechanical alloying of iron and tin powders for 24 hours using a planetary ball mill. Electrochemical measurements were performed on cold compacted specimens without sintering. XRD investigation on produced alloy showed the characteristics of a supersaturated solid solution. The passivity of solid solution alloy was investigated in 0.1M H3PO4 by employing potentiodynamic and potentiostatic polarization techniques. The passivity behavior of mechanically alloyed specimens was compared with anodic behavior of compacted iron specimens. A sharp decrease of diffusion controlled anodic current density of iron was observed due to establishment of quasi passivition as the result of Sn presence in mechanically alloying prepared specimen. The passivation behavior of anodically polarized Fe-25at%Sn supersaturated solid solution specimens was similar to passivity of binary Fe-Cr alloys.

A supersaturated solid solution of Fe-25at%Sn was produced by mechanical alloying of iron and tin powders for 24 hours using a planetary ball mill. Electrochemical measurements were performed on cold compacted specimens without sintering. XRD investigation on produced alloy showed the characteristics of a supersaturated solid solution. The passivity of solid solution alloy was investigated in 0.1M H3PO4 by employing potentiodynamic and potentiostatic polarization techniques. The passivity behavior of mechanically alloyed specimens was compared with anodic behavior of compacted iron specimens. A sharp decrease of diffusion controlled anodic current density of iron was observed due to establishment of quasi passivition as the result of Sn presence in mechanically alloying prepared specimen. The passivation behavior of anodically polarized Fe-25at%Sn supersaturated solid solution specimens was similar to passivity of binary Fe-Cr alloys.

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