To improve the abrasion resistance performance of the critical tribopairs within water hydraulic piston pumps, tribological characteristics of the stainless steel 17‐4PH and 17‐4PH coated with Cr3C2‐NiCr, WC‐10Co‐4Cr, Cr2O3 and Al2O3‐13%TiO2 sliding against carbon fiber reinforced polyetheretherketone (CF‐PEEK) composite under water‐lubricated condition were experimentally studied using a pin‐on‐ring test bench with different working conditions. It has been demonstrated by the experimental results that the tribological behaviors of CF‐PEEK/cermet coatings tribipairs were better than that of CF‐PEEK/17‐4PH tribopair under water lubrication. However, the Cr3C2‐NiCr coating could be damaged under high rotational speed. Due to the reaction film produced by the Al2O3‐13%TiO2 and water, the CF‐PEEK/Al2O3‐13%TiO2 material combination exhibits more excellent tribological behaviors than other tribopairs lubricated with water, and could preferentially be used in water hydraulic piston pumps.
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