Abstract
Aggressive operating conditions, such as high temperatures, chemical environments, abrasive wear, and corrosion, lead to premature wear and failure of parts in the metallurgical and machine-building industries. To solve this problem, protective coatings are used, but traditional methods (galvanic, chemical treatment) often do not provide sufficient reliability in extreme conditions. One of the most effective solutions is gas thermal spraying, which allows coatings with unique properties such as high hardness, wear resistance, corrosion resistance, and strong adhesion to the substrate to be applied. This article is devoted to the analysis of the operating conditions of parts in aggressive environments and the justification for choosing gas thermal spraying as the optimal protection method. Particular attention is paid to the selection of powder materials, such as WC/Co, Cr3C2-NiCr, Cr2O3, and Al2O3, depending on the type of wear (corrosive, abrasive, adhesive). Various types of gas thermal spraying and their advantages are considered. The correct choice of material and spraying method can significantly increase the service life of equipment, reduce repair costs, and increase overall production efficiency