Various industries are facing a critical problem of hot corrosion and wear degradation of metals in boilers (for generating high-pressure steam) in high-temperature environments. Flue gases produced by the burning of coal and biomass fuel are to blame for this corrosion in the boiler. The boiler components are subjected to a high rate of wear and corrosion by chlorides (NaCl, KCl) and sulphides (Na2SO4, K2SO4) at such an elevated temperature.
To withstand the high rate of wear and corrosion in harsh environments, the components should possess excellent high-temperature corrosion and wear resistance. To address the above-mentioned problem, we are here to propose a solution, which will include the development of novel material solutions. Such solutions are further used for the coating of boiler components and ultimately will provide protection against the high rate of wear and corrosion.
These coating technologies are very effective and economical as well, achieving the desired results. It has also been experimentally proven in previous literature reviews that coating is probably the only effective solution to provide protection. This kind of coating on the metal components is also termed “surface technology treatment”. One of the most famous and efficient surface technology treatments is known as thermal spraying.
Coatings containing hard phases like Cr3C2 and nanopowders like CNT and CeO2 on the components provide better protection. So, we shall work on the development of thermal spraying powders containing hard phases. With the help of this type of spraying, the tube steels can be coated with thermal spraying powders containing hard phases, and their working life may be enhanced.
