journal article·2012-06

Effect of Li and Cu addition on corrosion of Fe–40at.% Al intermetallics in molten LiCl–KCl eutectic salt

J.I. Barraza-Fierro, M.A. Espinosa-Medina, M. Hernandez-Hernandez, H.B. Liu, E. Sosa-Hernandez

Corrosion Science· Volume 59
Publisher page

Abstract

Abstract The effect of Li and Cu addition to base intermetallic Fe–40 at.% Al on corrosion behaviour in an electrolytic medium of molten LiCl–55 wt.% KCl eutectic salt at 450, 500 and 550 °C is studied. For this purpose, an electrochemical assessment is carried out through polarization curves and polarization resistance techniques. Corrosion products are characterized through scanning electron microscope and electron diffraction scanning. The test results show that Li additions slightly increase the corrosion rate, while Cu additions improve the corrosion resistance; both results are compared with the base material resistance. Further, a first approach of the corrosion mechanism is proposed, including the formation of protective layers.
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Research context

OpenAlex topics: Intermetallics and Advanced Alloy Properties · Molten salt chemistry and electrochemical processes · Advanced ceramic materials synthesis

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