Abstract

Thermal barrier coating using many ceramic powders is being done in internal combustion engines for more than two decades now. Thermal spray techniques are extensively used for coating of these powders over piston top, cylinder walls and valves of the engine. These coatings have to bear thermal stresses during combustion in the engine thus wear and tear of ceramic coating occurs. The present paper is a review of the research work that has been done to study different ceramic coatings to understand stresses in coatings, porosity and crack penetration by applying thermal shock tests and thermal torch experiment. Also the best ceramic coating material has been suggested suitable as thermal barrier coating for application in internal combustion engines.