Corrosion studies of a low alloyed Fe-10Cr-4Al steel exposed in liquid Pb at very high temperatures

摘要

The aim of the work has been to study the corrosion resistance of a new low alloyed experimental FeCrAl steel, with the potential use as corrosion barrier in high temperature lead based energy applications. The exposures were conducted in liquid lead at 800 degrees C and 900 degrees C, with controlled oxygen environment, for up to 1760 h. The results demonstrate that the new experimental alloy had formed a protective oxide in both exposures, with no indications of lead penetration. The alloy showed better corrosion properties than that of the reference materials: Kanthal APMT, Kanthal APMTT and AISI 316L. This indicates that the ductile Fe-10Cr-4Al-RE steel can be used as a corrosion barrier in liquid lead based clean energy applications, operating at very high temperatures. (C) 2020 Elsevier B.V. All rights reserved.