EFFECT OF Y2O3 ON THE TRIBOLOGICAL PROPERTIES OF POLYMER-METAL MM «STAHL 1018» COMPOSITE
DOI:
https://doi.org/10.32782/3041-2080/2026-6-9Keywords:
polymer-metal composite, MM «Stahl 1018», yttrium oxide, tribological properties, wear resistance, SEM, Raman spectroscopyAbstract
This study examines the tribological characteristics and wear mechanisms of the industrial polymer-metal composite MM «Stahl 1018», modified with a fine-dispersed yttrium oxide (Y₂O₃) filler. The research aims to scientifically justify the use of modifiers to enhance the functional properties of metal-polymers used for restoring and protecting friction surfaces of industrial equipment under intense abrasive wear. The microstructure and morphology were analyzed using scanning electron microscopy. The results revealed a heterogeneous structure consisting of irregular particles of various sizes, ensuring strong mechanical interlocking. Energy-dispersive X-ray spectroscopy identified a complex chemical composition (Fe, Cr, Al, Si, Y, Ba, and S), confirming uniform filler integration. Raman spectroscopy verified the stability of the polymer matrix, identifying epoxy groups and benzene rings responsible for high adhesion to metallic substrates. Performance was evaluated through standardized ball-on-disk tribological tests under dry friction conditions. It was experimentally demonstrated that adding 20 vol.% yttrium oxide significantly improves resistance to frictional wear. The specific volumetric wear rate was found to be W = 600.6 . 10–6 mm3/Nm, indicating high wear resistance. These findings confirm the technical efficiency of the modified MM «Stahl 1018» for the repair and renovation of components operating under severe service conditions.
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