Abstract
UDC 621.9.011:669.15-194.56:539.25´32´536
DOI https://doi.org/10.52577/eom.2026.62.3.09
The paper investigates certain properties of nozzles made of VT6 titanium alloy with ceramic-like coatings formed by micro-arc oxidation (MAO), including those with the addition of graphene and graphene oxide nanoparticles to the electrolyte. Data on measurements of microhardness, tribological characteristics, and abrasive resistance of the coatings, as well as on full-scale tests of the nozzles as part of an injection-jet apparatus are presented. The features of MAO coatings wear were identified depending on the component composition of the electrolyte and the condition of the formed surface layer. It has been established that under certain conditions, the wear resistance of titanium alloy nozzles with MAO coatings is comparable to the performance demonstrated by industrial produced ceramic nozzles.
Keywords: microarc oxidation, titanium alloy VT6, graphene, graphene oxide, ceramic-like coatings, nozzles, abrasive wear.