<p>Plasma-sprayed brass and brass–nickel-clad graphite composite coatings were developed and examined to improve the operational reliability of friction units operating under dry sliding conditions. The research focused on brass-based composite systems under dry friction against R18 steel. The initial brass coatings exhibited a friction coefficient of about 0.26 and a linear wear rate of 17.3 μm/km. The addition of nickel-clad graphite to the brass-based plasma coatings significantly enhanced their antifriction properties. With 10–30 wt.% nickel-clad graphite, the friction coefficient decreased to 0.20–0.19 and the linear wear to 5.2–4.7 μm/km. The optimal tribological properties of the brass–nickel-clad graphite/R18 steel friction pair were achieved at 50 wt.% nickel-clad graphite, resulting in a linear wear of 3.3 μm/km and a friction coefficient of 0.17. The improvement in tribological properties of the friction pair was attributed to the formation of graphite-containing secondary layers on the counterface. In the friction process, these layers acted as a solid lubricant. This was confirmed by microstructural and spectroscopic analyses. The experimental results demonstrated that the addition of nickel-clad graphite into brass-based plasma composite coatings was an effective approach to enhancing their antifriction properties.</p>