Fig. 5From: Prevention of stack corrosion under wet flue gas desulfurization conditions in a coal-fired power plant: performance analysis and comparative studyIron compounds in corrosion products of ND steel after accelerated corrosion test analysed by XRD: a static acid condensation group, samples were immersed in 50 °C acid for 144 h; b cyclic wet-dry group, samples were immersed in 50 °C acid for 108 h and were placed in 120 °C for 18 hBack to article page