(Mg2B2O5w+ND)/ZK60镁基复合材料的摩擦磨损性能研究

在湿球磨条件下以600 r/min高能球磨混粉,并将球磨后的粉末经过热压烧结-热挤压成型制备(Mg2B2O5w+ND)/ZK60镁基复合材料。研究了(Mg2B2O5w+ND)/ZK60镁基复合材料在不同载荷和转速下的干摩擦磨损性能。结果表明:干摩擦条件下,材料的摩擦系数随着滑动距离的增加会经历跑和阶段和稳定阶段;材料的质量磨损率随着转速的增大而降低,随着载荷的增大而增大,且基体镁合金的质量磨损率始终低于复合材料。随着摩擦载荷和转速的增加,材料的摩擦系数减小,然后逐渐趋于平稳。混杂增强的镁基复合材料相比基体合金具有更低的摩擦系数。

Study on Friction and Wear Properties of (Mg2B2O5w+ND) /ZK60 Magnesium Matrix Composite

(Mg₂B₂O_5w+ND) /ZK60 magnesium matrix composites were prepared by hot pressing and hot extrusion under the condition of wet milling with 600 r/min high energy ball milling. The dry friction and wear properties of (Mg₂B₂O_5w+ND) /ZK60 magnesium matrix composites under different loads and speeds were studied. The results showed that the dry friction condition, the friction coefficient of the material with the increase of sliding distance will experience running stage and stable stage; the quality of material wear rate decreases as the speed increases, while increases with the increase of the load, the wear rate of the magnesium alloy matrix quality always low in composite materials. With the increase of friction load and speed, the friction coefficient of the material decreases and then tends to be steady. Compared with base alloy, the hybrid reinforced magnesium matrix composites have lower friction coefficient.