<p>Chromium(III) oxide (Cr₂O₃) coatings produced by plasma spraying exhibit high hardness, strong wear resistance, and good corrosion resistance. Nevertheless, their overall performance is compromised by inherent defects such as low deposition efficiency, high porosity, and relatively low bonding strength. To address these limitations, the present study incorporated TiO₂ as a second phase into Cr₂O₃ coatings to improve performance, with a specific focus on the effect of TiO₂ content. By varying a stand-off distance (SOD), two composite coatings were fabricated: Cr₂O₃-25%TiO₂ (CT25) and Cr₂O₃-40%TiO₂ (CT40). The present study systematically examined the influence of process parameters on the microstructure and mechanical properties of the coatings. The process parameters were determined according to the different performance requirements, and the tribological and corrosion resistance of the coatings produced under these conditions were further investigated. The results indicated that, under their respective optimal processes, the wear rate of the CT25 coating was 9.7% lower than that of the CT40 coating. By fitting the Nyquist plots obtained from electrochemical impedance spectroscopy (EIS) measurements with an equivalent circuit, it was found that the micropore internal resistance (<i>R</i>_c) of the CT25 coating was 72.7% higher than that of the CT40 coating.</p>