Fig. 4From: Prevention of stack corrosion under wet flue gas desulfurization conditions in a coal-fired power plant: performance analysis and comparative studySEM morphologies of foam glass blocks after accelerated corrosion test under various conditions: a original samples; b static acid condensation group, samples were immersed in 50 °C acid for 144 h; c 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