Corrosion Behavior of Fe40Al Alloy with Additions of Ti, Ag, and Cr in Molten KCl +ZnCl2 | Zendy

R. Ademar | Zendy; J.G. González-Rodrı́guez | Zendy; J. Uruchurtu | Zendy; J. Porcayo-Calderón | Zendy; V.M. Salinas-Bravo | Zendy; G. DominguezPatiño | Zendy; A. Bedolla-Jacuinde | Zendy

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Corrosion Behavior of Fe40Al Alloy with Additions of Ti, Ag, and Cr in Molten KCl +ZnCl2

Author(s) -

R. Ademar,

J.G. González-Rodrı́guez,

J. Uruchurtu,

J. Porcayo-Calderón,

V.M. Salinas-Bravo,

G. DominguezPatiño,

A. Bedolla-Jacuinde

Publication year - 2012

Publication title -

international journal of corrosion

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.312

H-Index - 18

eISSN - 1687-9333

pISSN - 1687-9325

DOI - 10.1155/2012/146486

Subject(s) - corrosion , materials science , dielectric spectroscopy , alloy , intermetallic , metallurgy , polarization (electrochemistry) , electrochemistry , chemistry , electrode

The effect of 2.5 at.% Cr, Ti, and Ag on the corrosion behavior of Fe40Al intermetallic alloy in KCl-ZnCl2 (1 : 1 M) at 670°C has been evaluated by using electrochemical techniques. Techniques included potentiodynamic polarization curves, linear polarization resistance (LPR), and electrochemical impedance spectroscopy (EIS) measurements. Results have shown that additions of both Cr and Ti were beneficial to the alloy, since they decreased its corrosion rate, whereas additions of Ag was detrimental, since its additions increased the corrosion rate, although the alloy was passivated by adding Ag or Cr. The best corrosion performance was obtained with the addition of Cr, whereas the highest corrosion rate was obtained by adding Ag. This is explained in terms of the stability of the corrosion products formed film

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