FORMATION OF A COMBINED MULTICOMPONENT THERMOSTABLE WEAR-RESISTANT COATING ON THE SURFACE OF GRAINS OF ABRASIVE GRINDING POWDERS

Abstract

The process of applying a multicomponent combined oxygen-containing coating on the grains of grinding powders intended for the manufacture of grinding wheels has been investigated in order to increase the thermal stability and wear resistance of the tool. The objective of the research is to develop a method of liquid-phase treatment of grinding powder grains with multicomponent combined oxygen-, silicate- and carbide-containing substances (soluble oxides and silicates, insoluble oxides and carbides activated by mechanochemical method), as a result of which thermally stable wear-resistant coatings are formed on the abrasive grains. The basic technology of applying a multicomponent combined coating from a suspension of soluble and insoluble oxides (B₂O₃, Al₂O₃) to the grinding powder grains has been developed. The results of using abrasive powders with a combined coating in diamond-abrasive tools are presented.