<p>To enhance the durability of CuPb10Sn10 anti-friction coatings on the slipper-swash plate pair in axial piston pumps, this study fabricated CuPb10Sn10 coatings using a two-step process combining laser cladding and laser remelting (LR). The influence of LR laser power (1100-2000 W) on the microstructure, hardness, and wear resistance of the coatings was systematically evaluated, alongside the underlying mechanisms. Experimental results demonstrated that LR facilitates gas escape, reducing porosity by up to 76.3% (from 3.840% to 0.912%). LR enhanced coating hardness by 14.3% (reaching 116.51 HV at 2000 W) through grain refinement strengthening and defect elimination. Meanwhile, under a remelting power of 2000 W, the reduction of porosity at the coating bottom, coupled with the enhanced metallurgical bonding, increased the coating–substrate interfacial bonding strength from 150.3 MPa to 162.7 MPa. Phase analysis confirmed that the coatings retained Cu, Pb, and the Cu₄₁Sn₁₁ phase, with no new compounds formed. However, higher remelting power promoted precipitation of the Cu₄₁Sn₁₁ phase. Wear resistance significantly improved: At 2000 W, the coefficient of friction decreased by 4.4% (from 0.204 to 0.195), and wear loss was reduced by 23% (from 31.3 mg to 24.1 mg). Mechanistically, LR, by increasing density, enhancing hardness, and augmenting the Cu₄₁Sn₁₁ phase content, suppressed the dominant adhesive wear failure mode and promoted a shift toward predominantly abrasive wear. This study establishes a critical balance between defect suppression, microstructure optimization, and wear resistance enhancement. The findings provide actionable insights for improving the wear resistance of slipper-swash plate pairs.</p>