OBRABOTKAMETALLOV MATERIAL SCIENCE Том 23 № 3 2021 EQUIPMEN . INSTRUM TS Vol. 6 No. 1 2024 a b Fig. 9. Cross sections of a hone tooth using green silicon carbide powder as an abrasive material: a – magnifi cation 5×; b – magnifi cation 20× A fragment of the interface between the abrasive layer and the annular gear material is presented separately at 20× magnifi cation (fi gure 9, b). The color background allows drawing a conditional interface between the layers. The base of the material in both components is the same, which ensures strong adhesion between the abrasive layer and the material of the hone annular gear. Aluminum powder was added to the annular gear material to control the abrasive layer wear. The chemical composition near the interface was studied using a scanning electron microscope. In fi gure 10, a, the interface between the abrasive layer and the annular gear material is indicated by vertical line 1. The chemical composition of the treated surface was determined by horizontal line 2 passing from left to right from the area of the abrasive layer into the annular gear material. The main chemical element of the hone material is carbon, which presents in the composition of the abrasive layer and the annular gear. In this regard, carbon registration in the analysis of chemical composition was disabled. a b Fig. 10. Morphology and chemical composition at the interface between the abrasive layer and the gear material The chemical elements determined by X-ray spectral microanalysis in this case are oxygen O, sodium Na, aluminum Al, silicon Si and sulfur S (fi gure 10, b). The content of O, Na and S in the analyzed areas of the hone is the same. In the left part, i.e., in the abrasive layer, there are individual spikes in silicon concentration, which indicates the presence of crystals of an abrasive material (silicon carbide). Due to the fact that the scanning route was laid excluding contact with aluminum powder, aluminum was not detected in the section of the interface under consideration. The results of the X-ray spectral analysis are consistent with the previously obtained data and indicate a uniform distribution of chemical elements in the material of various parts of the hone, except for aluminum
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