Abstract
In this study, Al₂O₃-based oxide coatings were deposited on 10Kh18N9 austenitic stainless steel using the detonation spraying method, and their structural, mechanical, corrosion, and tribological properties were investigated. The effect of barrel filling levels (53%, 58%, and 63%) on coating formation was examined. Phase analysis revealed that the α-Al₂O₃ phase was predominant under all spraying conditions, accounting for 77–80% of the coating composition. The highest microhardness was achieved at a barrel filling level of 58%, with a microhardness of 1362.3 HV and an elastic modulus of 190.0 GPa. Corrosion tests demonstrated that the coatings reduced the corrosion current density by up to two times compared with the untreated steel substrate, while the highest corrosion resistance was observed at a filling level of 63% (Icorr = 0.00725 A/cm²). Tribological tests showed that the wear rate against a ZrO₂ counterbody was significantly lower than that against a 100Cr6 steel counterbody.