High Velocity Oxy-Fuel Sprayed Coatings - A Review

Due to attainment of high temperatures, materials are subjected to an aggressive environment which deteriorates the material in the form of wear, corrosion and erosion, at a fast rate. In order to achieve maximum effectiveness of a material, it is necessary to reduce the impact of the aggressive environment to a maximum possible extent. For this purpose, materials are coated with protective coatings employed with the help of thermal spraying techniques. High Velocity Oxy Fuel (HVOF) - a thermal spraying technique, is used to obtain dense and clean coatings. This paper summarises work carried out by various authors relating to the high velocity oxy fuel spraying process.