Mori, StefanoPidcock, AndySumner, JoySimms, NigelOakey, John2023-04-052023-04-052023-03-12Mori S, Pidcock A, Sumner J, et al., (2023) Fireside performance of different coatings in biomass power plant, Materials at High Temperatures, Volume 40, Issue 4, August 2023, pp.348-3590960-3409https://doi.org/10.1080/09603409.2023.2188351https://dspace.lib.cranfield.ac.uk/handle/1826/19406The energy sector will need to employ novel strategies to reduce greenhouse gas emissions, such as the increase of steam temperatures/pressures or the use of low carbon fuels (i.e. biomass). Both cause heat exchanger materials’ degradation issues, due to the formation of more/different corrosive deposits, which requires the use of expensive nickel-based materials or coatings. This paper focuses on the behaviour of three different coatings (HVOF NiCrFeSi, laser clad FeCrAl and Laser Clad NiCrFeSi) deposited on TP347HFG, at 700°C (up to 1000 h exposure). Tests were performed using the ‘deposit recoat’ method (KCl deposit) in simulated biomass combustion environments. Cross-sections were analysed using dimensional metrology, to determine distributions of metal loss and internal damage. Intergranular damage and pits were identified using SEM/EDX. A ‘diffusion cell’ behaviour was observed, which led to depletion of alloying elements from the coating and consequent increase in damage. The results suggested a severe degradation of all coatings.enAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/FiresideTP347HFGcoatingHVOFlaser cladbiomassArticle1878-6413