Nickel-base superalloys for ultra-supercritical coal-fired power plants: Fireside corrosion. Laboratory studies and power plant exposures

► Synergy effect of metal, gas and fly ash deposit in fireside corrosion. ► Sulphur-induced corrosion. ► Fly ashes as corrosion inhibitor or corrosive agent. ► Influence of chromium content on corrosion resistance of alloy. ► Influence of further alloying elements on corrosion resistance of alloy.