Author(s)

Licai Fu, Jun Yang, Qinling Bi, Weimin Liu

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Influence of microstructure on electrochemical behavior of nanocrystalline Fe₈₈Si₁₂ alloy has been investigated in 3.5 wt% NaCl solution. The results show that FFe₈₈Si₁₂ alloy with optimal corrosion resistance is composite of ordered Fe3Si and disordered Fe(Si) phases and grain size of 40 nm. Because the ordered Fe₃Si structure is beneficial to form SiO₂ film, which possesses good corrosion resistance compared with the Fe₂O₃ film from disordered Fe(Si). Moreover, although the decreased grain size is conducive to form preservative, as the grain size decreases to 10 nm, the grain boundary increases to above 30 vol%, which is the active sites for corrosion attack.

Fe₈₈Si₁₂ Alloy, Nanocrystalline, Microstructure, Electrochemical Behavior

L. Fu, J. Yang, Q. Bi and W. Liu, "Electrochemical Behavior of Nanocrystalline Fe₈₈Si₁₂ Alloy in 3.5% NaCl Solution," Materials Sciences and Applications, Vol. 2 No. 5, 2011, pp. 435-438. doi: 10.4236/msa.2011.25057.