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Structure and Electrochemical Corrosion Resistance of the Passivated Fe-40at.%Al Binary Alloy in Sulfuric Acid Solution

Authors :
M. Kupka
Marlena Freitag
Antoni Budniok
Bożena Łosiewicz
Source :
Solid State Phenomena. 163:68-71
Publication Year :
2010
Publisher :
Trans Tech Publications, Ltd., 2010.

Abstract

The electrochemical corrosion resistance of the passivated Fe-40at.%Al binary alloy has been investigated in sulfuric acid at 25°C. Structural investigations were conducted by XRD method and confirmed a single phase material of the ordered B2 structure. Electrochemical corrosion behavior was determined using potentiodynamic polarization and EIS methods. Anodic polarization measurements revealed a passive behavior of the tested electrode. Detailed characteristics of the Fe-40at.%Al electrode | passive film | solution interface as a function of the electrode potential in the fully passive range of 0.5  E  1.5 V, was investigated. The impedance behavior was determined by a highly doped n-i-n structure (n-type semiconductor – insulator – n-type semiconductor).

Details

ISSN :
16629779
Volume :
163
Database :
OpenAIRE
Journal :
Solid State Phenomena
Accession number :
edsair.doi...........691df4bcee565511f03fa1baa9c30a57
Full Text :
https://doi.org/10.4028/www.scientific.net/ssp.163.68