High-temperature corrosion of weld overlay coating/bulk FeCrAl exposed in O2 + H2O + KCl(s) at 600 °C – A microstructural investigationShow others and affiliations
2023 (English)In: Journal of Materials Research and Technology, ISSN 2238-7854, E-ISSN 2214-0697, Vol. 25, p. 7008-7023Article in journal (Refereed) Published
Abstract [en]
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. © 2023 The Author(s)
Place, publisher, year, edition, pages
Elsevier Editora Ltda , 2023. Vol. 25, p. 7008-7023
Keywords [en]
Dilution, FeCrAl, High-temperature corrosion, STEM-EDX, TEM, Weld overlay coating, Aluminum alloys, Chlorine compounds, Chromium alloys, Coatings, Corrosive effects, High resolution transmission electron microscopy, Iron alloys, Materials handling equipment, Potassium compounds, Scanning electron microscopy, Ternary alloys, Welds, Bulk materials, Corrosion behaviour, FeCrAl alloys, High temperature corrosions, Micro-structural, Microstructural investigation, Weld overlay, High temperature corrosion
National Category
Manufacturing, Surface and Joining Technology
Identifiers
URN: urn:nbn:se:ri:diva-65718DOI: 10.1016/j.jmrt.2023.07.073Scopus ID: 2-s2.0-85165527311OAI: oai:DiVA.org:ri-65718DiVA, id: diva2:1786393
Note
This research was funded by EC, European Commission for financial support within the frame of the Horizon 2020 project “Lowering Costs by Improving Efficiencies in Biomass Fueled Boilers: New Materials and Coatings to Reduce Corrosion (BELENUS)”, Grant Agreement number: 815,147.
2023-08-082023-08-082024-09-02Bibliographically approved