文章摘要
胡海峰.石墨烯/纳米铜复合润滑油添加剂摩擦学性能研究[J].润滑与密封,2018,43(9):98-103
石墨烯/纳米铜复合润滑油添加剂摩擦学性能研究
Tribological Properties of Grapheme/Copper Nanoparticles as Lubricant Additives
  
DOI:10.3969/j.issn.0254-0150.2018.09.017
中文关键词: 复合添加剂  石墨烯  减摩抗磨  摩擦因数  磨斑直径
英文关键词: composite addtive  grapneme  anti wear and friction reducing  friction coefficient  wear scar diameter
基金项目:山东交通学院校基金项目(Z201630).
作者单位E-mail
胡海峰 山东交通学院船舶与轮机工程学院 hfjamy@163.com 
摘要点击次数: 381
全文下载次数: 0
中文摘要:
      采用改进的Hummers方法制备石墨烯,并采用纳米激光粒度仪和X射线衍射仪对其进行表征。使用油酸和十八胺对纳米铜和石墨烯进行表面修饰,以改善其在润滑油中的分散稳定性;通过四球实验及缸套-活塞环变载荷摩擦磨损实验,评价石墨烯和纳米铜复合添加剂在润滑油中的减摩抗磨特性。采用金相显微镜和扫描电镜(SEM)观察试样磨损表面形貌,分析石墨烯和纳米铜复合添加剂的减摩抗磨机制。结果表明,石墨烯/纳米铜复合添加剂的加入使润滑油具有更加优异的抗磨减摩性能,且优于单一纳米铜或石墨烯添加剂;在摩擦过程中,石墨烯和纳米铜对摩擦副表面的凹槽和划痕进行了填充,使得磨损表面珩磨纹更加细密;同时,复合添加剂在摩擦过程中在摩擦表面形成了含有铜元素和碳元素的薄膜,起到了自修复作用。
英文摘要:
      The grapheme was prepared by modified Hummers method,and was characterized by nano laser granulometer and X-ray diffractometer(XRD).The oleic acid and octadecylamine were used to modify the surface of nano Cu particles and the grapheme to improve their dispersion stability in the lubricating oil.The anti wear and friction reducing properties of the graphene/nano Cu composite additive in lubricating oil were evaluated by four ball experiments and cylinder piston ring variable load friction and wear test.The surface topography of the specimens was observed by metalloscope and scanning electron microscope(SEM),in order to analyze the mechanism of anti wear and friction reducing of the composite additive.The results show that the graphene/nano Cu composite additive has better anti wear and anti friction properties than the single additive of nano Cu or graphene.In the process of friction,graphene and nano Cu are filled on the groove and scratches of the friction surface to make the surface honing more fine.The thin film containing Cu and C elements is formed in the friction surface by the graphene/nano Cu composite additive in the process of friction,which plays the role of self repairing.
查看全文   查看/发表评论  下载PDF阅读器
关闭

分享按钮