Mori, StefanoSumner, JoyBouvet, JustinSimms, Nigel J.2022-01-132022-01-132022-01-10Mori S, Sumner J, Bouvet J, Simms NJ. (2022) Fireside and steamside performance in biomass power plant, Materials at High Temperatures, Volume 39, Issue 2, 2022, pp. 106-1210960-3409https://doi.org/10.1080/09603409.2021.2019657http://dspace.lib.cranfield.ac.uk/handle/1826/17409To address the challenge of climate change, the energy sector is developing novel strategies to reduce greenhouse gas emissions. One route is to increase steam temperatures and pressures (above 650°C and 350 bar). Another route is the use of potential net zero emissions fuels, like biomass. Both these routes cause issues for the heat-exchanger materials due to the differences in composition of the combustion environments generated, compared to coal. This paper characterises candidate superheater/reheater alloys’ behaviour (Sanicro 25 and IN740) at 700°C. 1,000 h fireside and 10,000 h steamside exposures were carried out, the first using ‘deposit recoat’ techniques. Sample cross-sections were analysed using dimensional metrology and SEM/EDX. Fireside results for Sanicro 25 showed degradation throughout the samples’ thicknesses. In steamside exposures, Sanicro 25 formed a Cr-rich scale, and Nb rich particles (z-phase). IN740 showed lower metal and sound metal damage than Sanicro 25 for fireside and steam oxidation exposures.enAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/Biomassfireside corrosionsteamside oxidationsanicro 25IN740dimensional metrologyArticle1878-6413