KCl-Induced Corrosion of an FeCrAl Alloy at 600°C in O2 + H2O Environment: The Effect of Pre-oxidation
Artikel i vetenskaplig tidskrift, 2015

The present study investigates the influence of H2O and KCl on the high temperature corrosion of an FeCrAl alloy at 600 A degrees C. Polished samples were exposed to O-2 or O-2 + H2O and to O-2 + H2O with KCl applied. The samples were investigated using SEM/EDX, XRD, IC, AES and SIMS. It was found that KCl accelerates corrosion and that a rapidly growing iron-rich oxide forms with time. Chromate formation is shown to initiate the formation of a non-protective oxide scale. Pre-oxidising the alloy before exposure in the presence of KCl had a strongly beneficial effect on the corrosion.

Pre-oxidation

KCl

Water vapour

FeCrAl

High temperature corrosion

Författare

Niklas Israelsson

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

Josefin Hall

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

Kristina M Hellström

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

Mats Halvarsson

Chalmers, Teknisk fysik, Materialens mikrostruktur

Jan-Erik Svensson

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

Lars-Gunnar Johansson

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

Oxidation of Metals

0030-770X (ISSN) 1573-4889 (eISSN)

Vol. 83 1-2 29-53

Ämneskategorier

Kemi

DOI

10.1007/s11085-014-9507-2

Mer information

Skapat

2017-10-07