Abstract:

Abstract:The GD-APC hybrid polymeric corrosion resistance coatings drop off after one year operation in the stack of 2×600 MW hypercritical coal power units in a power plant of Guizhou province.The coating chips are analyzed through macro structure microscope,energy spectrum analysis microscope and scanning electron microscope.The main reasons are that the fume gas temperature changes abruptly and the construction is not strictly under the control of the construction procedures.At last,advice is give about the design,construction and operation stage.

Key words: Keywords:wet stack;GD-APC corrosion resistant coating, failure analysis