【摘要】 以高定向热解石墨为原料,采用高能球磨法制得多层石墨烯,以及Ni、Y金属颗粒复合多层石墨烯.通过扫描电子显微镜、拉曼光谱、X射线衍射光谱对上述多层石墨烯及Ni、Y复合多层石墨烯进行形貌和结构表征.分别将上述多层石墨烯及Ni、Y复合多层石墨烯加入聚α烯烃PAO6中,系统考察分散液对GCr15自配副界面摩擦学行为的影响.结果表明:利用球磨法能够制备多层石墨烯,同时,Ni、Y金属颗粒能够与多层石墨烯形成纳米复合结构.GCr15钢自配副在聚α烯烃PAO6油润滑条件下,向油中添加多层石墨烯及Ni、Y复合多层石墨烯后,摩擦系数降低至0.03～0.05.更多还原

【Abstract】 In this study, highly oriented pyrolytic graphite(HOPG) was used as raw material to fabricate multi-layer graphene(ML-Gr) via high energy ball milling.Further, Ni/Y nano-particles were composited into the as-fabricated multi-layer graphene to get Ni/Y@Gr composition.Scanning electron microscopy, Raman spectroscopy, X-ray diffraction were employed to characterize the morphology and nano-structures.Then the ML-Gr and Ni/Y@Gr were added as lubricant addictive to poly alpha olefins 6(PAO6).And the solid-liquid lubricant was dropped on self-mated GCr15 steel counterpart interface to improve its tribological property.Results indicate that the friction coefficient of self-mated GCr15 steel was reduced to 0.03～0.05 by adding the as-prepared solid-liquid lubricant.更多还原