Thermally sprayed coatings resistant to erosion and corrosion for power plant boilers - A review

The article presents the issues related to materials and the fabrication process of protective coatings by thermal spraying methods used for the protection of power plant boiler elements in Poland. The basic mechanisms of destruction processes occurring in the fluidized bed power boilers and the associated equipment were presented. The basic methods of thermal spraying were characterized, which allow the production of coatings with the chemical composition, phase structure and properties appropriate for a functional performance. The advantages and disadvantages of the methods of thermal spraying were discussed. The basic groups of coatings with a high resistance to corrosion and erosion wear produced by thermal spraying methods, which can be used in the power industry, were described. (C) 2014 Elsevier B.V. All rights reserved.