Intergranular and Pitting Corrosion Behavior of Fe-25Al-6Cr Intermetallic Compounds Containing Mo, Nb and B


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In order to investigate the intergranular and pitting corrosion behavior of Fe-25Al-6Cr intermetallic compounds containing Mo, Nb and B, 11 kinds of Fe-25Al were prepared by arc melting in Ar gas, using high purity aluminum and iron. The fabricated materials were heat treated for homogenious structure and stabilization of the iron aluminides. The electrochemical methods were used for interganular and pitting corrosion. Effects of Mo, Cr, Nb and B on the repassivation current density(Ir) and the active current density(Ia) of Fe-25Al-6Cr were recorded in the following order: MoCr>Nb>B, from the highest to the lowest respectively.



Materials Science Forum (Volumes 539-543)

Main Theme:

Edited by:

T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran




H. C. Choe et al., "Intergranular and Pitting Corrosion Behavior of Fe-25Al-6Cr Intermetallic Compounds Containing Mo, Nb and B", Materials Science Forum, Vols. 539-543, pp. 1583-1588, 2007

Online since:

March 2007




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