High-temperature corrosion of weld overlay coating/bulk FeCrAl exposed in O2 + H2O + KCl(s) at 600 °C – A microstructural investigation
Artikel i vetenskaplig tidskrift, 2023

This work investigates the impact of high-temperature corrosion behavior of the newly developed FeCrAl alloy Kanthal® EF101 bulk material and weld overlay coating in the presence of KCl(g)/KCl(s) at 600 °C. The oxide scale formed within the secondary corrosion regime after exposure and the impact of alloy microstructure on corrosion behavior was investigated using scanning transmission electron microscopy. The findings indicated the key microstructural differences is the alloy grain size which influences the formation of a protective scale. In addition, It is indicated that coating exhibited inferior performance than the bulk material, primarily attributed to the microstructural differences.

STEM-EDX

FeCrAl

Weld overlay coating

Dilution

TEM

High-temperature corrosion

Författare

Imran Hanif

RISE Research Institutes of Sweden

Chalmers, Kemi och kemiteknik, Energi och material

Vicent Ssenteza

Chalmers, Kemi och kemiteknik, Energi och material

Johan Eklund

Chalmers, Kemi och kemiteknik, Energi och material

Johanna Nockert Olovsjö

Kanthal AB

Torbjörn Jonsson

Chalmers, Kemi och kemiteknik, Energi och material

Journal of Materials Research and Technology

22387854 (ISSN) 22140697 (eISSN)

Vol. 25 7008-7023

Ämneskategorier

Bearbetnings-, yt- och fogningsteknik

Metallurgi och metalliska material

Korrosionsteknik

DOI

10.1016/j.jmrt.2023.07.073

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Senast uppdaterat

2023-08-08