Effect of mischmetal addition on the electrochemical behavior of chromium-alloyed iron aluminide

The potentiodynamic polarization behavior of Mm-alloyed iron aluminides (Fe sub 3 Al) reveals that rare earth additions are beneficial as regards passivation of Cr-alloyed iron aluminides. The major effect of Mm additions appears to be in the alteration of the nature of the passive film such that lo...

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Bibliographic Details
Published in:Journal of materials science letters 2000, Vol.19 (12), p.1061-1062
Main Authors: BABU, N, BALASUBRAMANIAM, R, KUMAR, A. V. R
Format: Article
Language:English
Subjects:
Applied sciences
Corrosion
Corrosion environments
Exact sciences and technology
Metals. Metallurgy
Online Access:Get full text
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Summary:The potentiodynamic polarization behavior of Mm-alloyed iron aluminides (Fe sub 3 Al) reveals that rare earth additions are beneficial as regards passivation of Cr-alloyed iron aluminides. The major effect of Mm additions appears to be in the alteration of the nature of the passive film such that lower passive current density is obtained. The critical current density for passivation, the passive range, the zero current potential and the breakdown potential are not significantly affected by Mm additions to Cr-alloyed iron aluminides.
ISSN:0261-8028
DOI:10.1023/A:1006751406173