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用往复式摩擦磨损试验机考察了新型高强度、高耐磨性铸造铝青铜合金Cu-14Al-4Fe-Mn(代号HSWAB)的摩擦磨损性能,利用形貌扫描电子显微镜观察分析了合金磨损表面形貌,探讨了其磨损机理.结果表明,HSWAB合金在干摩擦和油润滑条件下的摩擦磨损性能及磨损机理存在明显差异.在干摩擦条件下,合金中脱落的硬质点及氧化物等磨粒导致较为严重的磨粒磨损,摩擦系数高、磨损率大,主要磨损机理为磨粒磨损、粘着磨损、氧化磨损及疲劳磨损.在油润滑条件下,摩擦系数和磨损率均显著降低,疲劳磨损和氧化磨损受到抑制,主要磨损机理为磨粒磨损和粘着磨损.Cu-14Al-4Fe-Mn合金在油润滑条件下的摩擦系数低达0.08,磨损率低达3.7×10-6g/m,是一种优良的耐磨材料.
The friction and wear properties of a new type of high strength and wear resistant cast aluminum bronze alloy Cu-14Al-4Fe-Mn (codenamed HSWAB) were investigated by means of a reciprocating friction and wear tester. The morphology of the wear surface of the alloy was observed by the morphology scanning electron microscope The results show that the friction and wear properties of HSWAB alloy under dry and oil lubrication conditions and the wear mechanism are obviously different.When the dry friction condition, Particles lead to more serious abrasive wear, high coefficient of friction, wear rate, the main wear mechanism for abrasive wear, adhesive wear, wear and fatigue wear and oxidation.In the oil lubrication conditions, the friction coefficient and wear rate were significantly reduced fatigue Wear and oxidation wear are inhibited, and the main wear mechanism is abrasive wear and adhesive wear.Cu-14Al-4Fe-Mn alloy has low coefficient of friction of 0.08 and low wear rate of 3.7 × 10-6g / m under oil lubrication conditions, Is a good wear-resistant materials.