A Comprehensive Review on IC Engine’s Thermal Barrier Coating Materials

Internal combustion (IC) engine parts with ceramic coatings have strong thermal barrier qualities that are used to stop heat loss during operation. Due to a variety of factors, complete combustion of the charge is not achievable in two-stroke spark-ignition engines, which leaves harmful emissions like carbon monoxide and hydrocarbon emission from the combustion chamber (CC) during combustion. Pollution is caused by unburned hydrocarbons that are present in the exhaust gases. Numerous engine components may have thermal barrier coatings (TBC) that help cut down on heat leakage. TBC plays a crucial role in improving internal combustion (IC) engine performance and efficiency by reducing heat transfer to the engine components and enhancing their durability. While metals have traditionally been used in engine components, ceramics offer several advantages as TBC materials due to their superior thermal insulation properties, as well as resistance to oxidation, corrosion, and wear. TBCs to the surface of engine components, such as pistons, have proven to be beneficial for IC engine performance. The choice of TBC materials and the coating methods used to apply them can significantly impact various engine operating variables which causes a change in emissions. Indeed, the operating temperature of TBC in the automobile sector can significantly impact engine efficiency. TBCs are designed to withstand high-temperature environments and provide thermal insulation, thereby reducing heat transfer to engine components. The higher the operating temperature, the more effective the TBC system can be in improving engine efficiency.