Corrosion, abrasion and the impact of high temperatures are the main mechanisms of destruction of machine and device components in almost every branch of industry. An effective method of preventing these phenomena is the use of protective coatings produced by thermal spraying. The use of these coatings on new elements, as well as the regeneration of worn ones, guarantees optimal efficiency of industrial plants.

Thermal spraying is a technology of applying metallic, cermet, ceramic and plastic coatings on a properly prepared substrate of the coated element, which has been used in many industries. The main methods of thermal spraying include flame spraying, plasma spraying, arc spraying and supersonic flame spraying (HVOF). Energy sources in the form of a flame, plasma or electric arc are used to heat the coating material (usually in the form of powder or wire) to a liquid state or to melt it. Then the material particles are accelerated and directed by a stream of gases or compressed air onto a properly prepared surface. After impact, they bond with the substrate to form a coating.