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研究阴极电弧沉积制备的类金刚石(DLC)涂层对镍-铝-青铜(NAB)合金力学性能、摩擦学行为和腐蚀性能的影响.纳米硬度测试显示,与NAB合金相比,DLC涂层具有更大的硬度.销盘摩擦测试显示,摩擦因数由NAB合金的0.2降低为DLC涂层的0.13.动电位极化和电化学阻抗谱结果表明,在3.5％(质量分数)的NaCl溶液中,腐蚀电流密度由NAB合金的2.5μA/cm2降低到DLC涂层的0.14μA/cm2.此外,基体-电解质界面的电荷转移电阻由NAB合金的3.3 kΩ·cm2提高到DLC涂层的120.8 kΩ·cm2,表明DLC涂层能提高合金的耐腐蚀性能.“,”The effect of diamond-like carbon (DLC) coating (fabricated by cathodic arc deposition) on mechanical properties, tribological behavior and corrosion performance of the Ni-Al-bronze (NAB) alloy was investigated. Nano-hardness and pin-on-plate test showed that DLC coating had a greater hardness compared with NAB alloy. Besides, the decrease in friction coefficient from 0.2 for NAB substrate to 0.13 for the DLC-coated sample was observed. Potentiodynamic polarization and EIS results showed that the corrosion current density decreased from 2.5 μA/cm2 for bare NAB alloy to 0.14 μA/cm2 for DLC-coated sample in 3.5 wt.％ NaCl solution. Moreover, the charge transfer resistance at the substrate-electrolyte interface increased from 3.3 kΩ·cm2 for NAB alloy to 120.8 kΩ·cm2 for DLC-coated alloy, which indicated an increase in corrosion resistance due to the DLC coating.