High Temperature Erosion Corrosion Behaviour of Alloy Powder Coatings on Boiler Steels

Описание: This project has been supported by prototyping funding support from Chitkara University NewGen IEDC. For more details visit - https://newgeniedc.chitkara.edu.in/

Below is the brief description about the project -
Various industries are facing a critical problem of hot corrosion and wear degradation of metals in the boilers (for generating high pressure steam) under high temperature environment. This corrosion in the boiler is caused by flue gases generated after burning of coal and biomass fuel. The boiler components are subjected to high rate of wear and corrosion by chlorides (NaCl, KCl), sulfides (Na2SO4, K2SO4) at such an elevated temperatures.

To withstand the high rate of wear and corrosion in this harsh environment, the components should possess excellent high temperature corrosion and wear resistance. To address the above said problem, we are here to propose a solution which shall include the development of novel materials solutions. Such solutions are further used for the coating of boiler components and ultimately shall provide a protection against the high rate of wear and corrosion.

These coating technologies are very effective and economical as well to achieve the desired results. It has also been experimentally proven in previous literature reviews that coating is probably the only effective solution to provide the protection. These kind of coating on the metal components is also termed as surface technology treatment. One of such famous and efficient surface technology treatment used is known as thermal spraying.

Coatings containing hard phases like Cr3C2 and nano powders like CNT, CeO2 on the components provide better protection. So we shall work in 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.