文章摘要
少层石墨烯负载纳米SiO2复合材料对水润滑性能的影响
Effect of Less Graphene-based SiO2 Nanocomposite Materials on Water Lubricity Properties
  
DOI：10.11896/j.issn.1005-023X.2018.24.005
中文关键词: 石墨烯 二氧化硅 复合材料 润滑性能 磨损机理
英文关键词: graphene, silicon dioxide, composite materials, lubrication performance, wear mechanism
基金项目:张世堂:男,1975年生,博士研究生,主要研究方向为液体润滑及材料保护 E-mail:zst759402@sina.com
Author NameAffiliationE-mail
ZHANG Shitang Unit 92228 of PLA, Beijing 102442 zst759402@sina.com 
ZHAO Haichao National Engineering Research Center for Mechanical Product Remanufacturing, Academy of Armored Force Engineering, Beijing 100072  
QIAO Yulin National Engineering Research Center for Mechanical Product Remanufacturing, Academy of Armored Force Engineering, Beijing 100072  
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中文摘要:
      采用液相超声直接剥离法制备了少层石墨烯负载纳米SiO2复合材料,采用TEM对其形貌进行了表征,利用多功能往复摩擦磨损试验仪考察了少层石墨烯负载纳米SiO2复合材料对水润滑性能的影响。通过SEM、XPS分别分析了磨损表面的形貌、元素组成及典型元素的化学状态,初步探讨了石墨烯负载纳米SiO2复合材料在水中的润滑机理。结果表明:纳米SiO2均匀分布于少层石墨烯片层表面和层间；其作为水润滑添加剂具有良好的减摩抗磨性能,这主要是由于石墨烯负载纳米SiO2复合材料在磨损表面形成的摩擦化学反应膜与纳米SiO2的自修复效应发生协同作用,抑制了Fe的氧化,并填补和修复了磨损表面,使磨痕表面的摩擦磨损减轻。
英文摘要:
      Graphene-based with SiO2 nanocomposite materials were prepared by the melthod of liquid-phase ultrasonic exfoliation. Morphologies of nanocomposite materials were characterized by means of TEM. their tribological properties as a pure water additive were investigated using multi-functional reciprocating friction and wear tester. The morphology, elemental composition and chemical states of typical elements were analyzed by SEM and XPS. The lubrication mechanism of graphene-loaded with SiO2 nanocomposites in water was preliminarily discussed. The results showed that the nano SiO2 evenly distributed in the few layer graphene layer and surface layer; the nanocomposite materials as a pure water additive displayed good friction-reducing and antiwear perfor-mance. The prosperity was attributed to the synergistic effect of the self-repairing effect of nano SiO2 and friction chemical reaction film formed on the worn surface by graphene-loaded with SiO2 nanocomposite which inhibited oxidation of Fe and repaired the wear surface, that reduced friction and wear on the frictional surface.
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