摘 要

石墨烯优秀的减磨性能使得石墨烯成为潜在的高性能纳米润滑材料，非常适合作为润滑添加剂，然而石墨烯难以稳定分散于水和润滑油中的特性，使其应用受到限制。本文回顾了石墨烯最新的研究进展，重点介绍了石墨烯作为油基润滑添加剂的摩擦学性能研究。同时指出了石墨烯的其摩擦化学反应润滑机理等领域的研究值得关注。如今，石墨烯因为具有的优异摩擦磨损性能受到了广大研究者的广泛关注，但是石墨烯作为润滑添加剂时的摩擦磨损性能差异的研究还不够充分。

针对以上问题，本文研究了石墨烯作为润滑油添加剂时对摩擦和磨损性能的影响。结果表明:通过分析摩擦磨损实验的摩擦系数的变化，发现微量石墨烯作为添加剂确实能够起到减小摩擦、降低磨损的作用。而且采用石墨烯作为添加剂时，摩擦系数的变化与载荷和摩擦频率相关，受载荷影响较大，受摩擦频率变化的影响较小。对试样经过摩擦磨损实验后的表面形貌的观察也可以发现，石墨烯在摩擦副之间起到的润滑和填充作用，也会减小摩擦、降低磨损。然而在高载荷试验条件下添加过量的石墨烯时，石墨烯因为含量过高形成团聚，这反而会使磨损急剧增加。

关键词：石墨烯；润滑油；摩擦磨损

Abstract

Graphene is a potential high performance nano lubricating material， which is very suitable as a lubricating additive. However， graphene is difficult to be dispersed in water and lubricating oil， so its application is limited. In this paper， the latest research progress of graphene is reviewed， and the tribological properties of graphene as an oil based lubricant additive are mainly introduced. At the same time， it is pointed out that the research on the tribological reaction lubrication mechanism of graphene is worthy of attention. Nowadays， graphene has attracted wide attention because of its excellent friction and wear properties. However， the research on the difference of friction and wear properties of Shi Moxi as lubricating additive is not enough.

In view of the above problems， the effect of graphene as lubricant additive on friction and wear properties is studied in this paper. The results show that by analyzing the change of friction coefficient in the friction and wear experiments， it is found that the trace graphene can actually reduce friction and reduce wear as additives. Moreover， when graphene is used as an additive， the change of the friction coefficient is related to the load and the frequency of friction， which is greatly influenced by the load， and is less affected by the change of the frequency of friction. The observation of the surface morphology after the test of friction and wear can also find the lubrication and filling effect of graphene in the friction pairs， and it also reduces friction and reduces wear. However， when excessive graphene is added under high load test conditions， graphene is reunited because of high content， which will cause a sharp increase in wear.

Key Words：Graphene；Lubricating oil；Friction and wear

目录

第1章 绪论 1

1.1 石墨烯作为油基润滑添加剂的时代背景 1

1.1.1 社会发展与能源消耗 1

1.1.2 石墨烯作为油基润滑添加剂研究的目的及意义 1

1.1.3 国内外研究现状 1

1.2 石墨烯的基本介绍 2

1.2.1 石墨烯的基本结构特点和性能 2

1.2.2石墨烯润滑机理分析 3

第2章 研究的主要内容和方法原理 4

2.1 研究内容 4

2.2 技术方法 4

2.3 实验准备工作 4

2.3.1 实验试样的抛光处理 4

2.3.2 配置含不同浓度石墨烯的润滑油 5

2.4 实验原理介绍 6

2.4.1 多功能摩擦磨损实验 6

2.4.2 表面轮廓采集实验 7

第3章 实验结果处理和数据分析 9

3.1 引言 9

3.2 滤波分析 9

3.3 不同工况下的pao基础油的摩擦性能变化 9

3.3.1 不同浓度工况下对于pao基础油的摩擦性能影响 9

3.3.2 不同频率工况下对于pao基础油的摩擦性能影响 13

3.3.3 不同载荷工况下对于pao基础油的摩擦性能影响 17

3.4 试样经过摩擦磨损实验后的表面轮廓分析 21

3.5 本章小结 23

第4章 结论及展望 24

4.1 结论 24

4.2 展望 24

参考文献 25

致谢 26

第1章 绪论

1.1 石墨烯作为油基润滑添加剂的时代背景