Restoration and hardening of worn parts are paramount for agricultural and general engineering, which helps increase their efficiency and reliability during subsequent maintenance. Various methods are used to restore the worn layer, such as spraying, surfacing, or thermal coating, to extend the service life of the part and the machine as a whole. Composite materials are multicomponent hetero-phase materials consisting of a polymer, metal, ceramic, or another base (matrix) reinforced with fillers made of fibers, filamentous crystals, and finely dispersed particles. The matrix gives the desired shape to the part, influences the formation of the properties of the composite material, and protects the reinforced phase from mechanical damage and other environmental influences. The parametric characteristics of technological processes and the specificity of agricultural machinery designs are determined by the laws of interdependence between the aggregates of the effects of the functional surfaces of the working bodies of these machines and the reactions to these effects of the abrasive environment during technical operation. Adding chromium, silicon, and titanium as alloying elements or chromium carbide, silicon carbide, and titanium carbide as a strengthening element to the restoration layer can significantly increase the wear resistance and durability of the product. Wear-resistant impurities are introduced into the composition of powder composite materials to increase the reliability and durability of parts and assemblies of agricultural machinery. The analysis results of the structure and properties of a composite material with a self-sharpening effect are presented.