CAJ | 학술논문

采用粉末冶金法和热挤压工艺制备了碳纳米管增强 AZ91镁合金(CNTs/AZ91)复合材料，研究了复合材料在干滑动条件下的摩擦磨损性能、磨损形貌及磨损机制，并与 AZ91镁合金基体的进行了对比。结果表明：由于 CNTs 的自润滑和增强作用，复合材料的摩擦磨损性能明显优于基体合金的；随着载荷和 CNTs 质量分数增加，复合材料的摩擦因数逐渐降低；随着载荷增加，复合材料的磨损量增大；在相同的载荷下，复合材料的磨损量随 CNTs 质量分数的增大而减小；AZ91镁合金的磨损机制为疲劳磨损和磨粒磨损，复合材料的磨损机制以轻微的粘着磨损和磨粒磨损为主。
채용분말야금법화열제압공예제비료탄납미관증강 AZ91미합금(CNTs/AZ91)복합재료，연구료복합재료재간활동조건하적마찰마손성능、마손형모급마손궤제，병여 AZ91미합금기체적진행료대비。결과표명：유우 CNTs 적자윤활화증강작용，복합재료적마찰마손성능명현우우기체합금적；수착재하화 CNTs 질량분수증가，복합재료적마찰인수축점강저；수착재하증가，복합재료적마손량증대；재상동적재하하，복합재료적마손량수 CNTs 질량분수적증대이감소；AZ91미합금적마손궤제위피로마손화마립마손，복합재료적마손궤제이경미적점착마손화마립마손위주。
Carbon nanotubes (CNTs ) reinforced AZ9 1 magnesium alloy composites were fabricated by powder metallurgy method and followed hot extrusion process.The friction and wear properties,wear morphology and wear mechanism of the composites under dry sliding friction conditions were investigated and compared with that of AZ9 1 magnesium alloy matrix .The results show that the friction and wear properties of the composites were better than that of AZ9 1 magnesium alloy matrix due to the effect of self-lubricating and strengthening of CNTs. Moreover,the friction factor of the composites gradually declined with the increase the load and the content of CNTs.In addition,wear mass loss of the compositse increased with the increase of the load.However,under the same condition of the load,the wear mass loss of the composites decreased with increase the contents of CNTs.The main wear mechanism of AZ9 1 magnesium alloy were fatigue wear and abrasive wear,and that of the composites was slight adhesive wear and abrasive wear.