A Comprehensive Review of the Corrosion and Erosion Resistant Coating on the Fireside in Power Plant Boilers

Conventional steels and their alloys are not able to withstand high temperature corrosion in thermal power plant boilers. For boiler fireside components, issues of concern include erosion and corrosion in operating environments. Different thermal spray coating techniques have been developed to spray different types of coatings on boiler steels. Advances in thermal spraying techniques have led to the development of coatings with corrosion resistance properties. In this article, firstly, the introduction and the necessity of applying the coating used for boiler equipment is stated, then the studies carried out until today about the performance, developments and applications of thermal spray coatings for resistance to high temperature corrosion were examined, and finally a case study of using this coating in a power plant was mentioned. Among the types of coatings, Ni-20Cr alloy and their composite with carbide compounds is the most optimal coating with good performance in all types of boilers.