在自行研制的试验设备上研究了几种钴基合金与Al2O3干磨损和在锌液中(460±5℃)腐蚀磨损的状况及磨损机理。研究表明,过共晶钴基合金的耐腐蚀磨损性能要优于亚共晶合金,但是干磨损时情况完全相反。在不同的摩擦副中几乎都有磨粒磨损发生。钴基合金的腐蚀磨损机制主要是材料的塑性变形、脆性断裂和磨粒磨损。 The dry wear of several Co-based alloys with Al2O3 and the corrosion and wear mechanism in the zinc solution (460 ± 5 ℃) were studied on a self-developed test equipment. Studies have shown that the corrosion resistance of hypereutectic cobalt-based alloys is better than that of hypoeutectic alloys, but the opposite is true for dry wear. Abrasive wear occurs almost everywhere in different friction pairs. Cobalt-based alloy corrosion wear mechanism is mainly plastic deformation, brittle fracture and abrasive wear.