Oxidation of Fe-2.25Cr-1Mo in presence of KCl(s) at 400 °C – Crack formation and its influence on oxidation kinetics
Artikel i vetenskaplig tidskrift, 2020

Accelerated corrosion of boiler equipment remains a challenge for efficiently utilising biomass- and waste for power production. To overcome this challenge a better understanding of the influence of corrosive species present is required. This study focuses on the influence of KCl(s) on corrosion of Fe-2.25Cr-1Mo at 400 °C. This is done by well-controlled laboratory exposures and detailed microstructural investigation with ion and electron microscopy (TEM, FIB, SEM, EDX, XRD, TKD). The scale microstructures are linked to oxidation kinetics. The results indicate that KCl(s) increases the ionic diffusion through the oxide scale as well as introduces cracks and delamination resulting in a rapid periodic growth process.

Chlorination

Alkaline corrosion

Oxidation

STEM

Low alloy steel

High temperature corrosion

Författare

Amanda Persdotter

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

Mohammad Sattari

Chalmers, Fysik, Materialens mikrostruktur

Erik Larsson

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

Mercedes Andrea Olivas Ogaz

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

Jesper Liske

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

Torbjörn Jonsson

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

Corrosion Science

0010-938X (ISSN)

Vol. 163 108234

Ämneskategorier

Annan kemi

Metallurgi och metalliska material

Korrosionsteknik

DOI

10.1016/j.corsci.2019.108234

Mer information

Senast uppdaterat

2020-01-28