论文部分内容阅读
采用球面接触往复移动方式,使用UTM-2摩擦磨损试验机考察了石墨烯作为润滑油添加剂的摩擦磨损性能。用TEM、SEM、XRD、红外光谱、拉曼光谱等手段对石墨烯的形貌和结构进行表征,用PAO4作为基础油和添加质量分数为0.01%石墨烯(GP)的润滑油进行对比,研究了在不同温度和不同织构面积率下的摩擦学性能。结果表明:在润滑油中添加石墨烯能显著改善摩擦磨损性能,温度为60℃和100℃时的效果最明显。在60℃和100℃工况下,在PAO4基础油中相对于原始表面各种织构都增大了摩擦系数和磨损率,在25℃和150℃工况下表面织构对摩擦磨损的影响不大;使用含有石墨烯的润滑油在不同温度下织构面积率为5%时摩擦系数较低,织构面积率为20%时摩擦系数较高,织构面积率为10%时磨损率较低。
The friction and wear properties of graphene as a lubricating oil additive were investigated by using the reciprocating movement of spherical contact and the UTM-2 friction and wear tester. The morphologies and structures of graphene were characterized by TEM, SEM, XRD, IR and Raman spectroscopy. PAO4 was used as the base oil and the lubricating oil with the mass fraction of 0.01% GP was compared. Tribological properties at different temperature and texture area rates were studied. The results show that the addition of graphene to the lubricating oil can remarkably improve the friction and wear properties. The effect is obvious at 60 ℃ and 100 ℃. At 60 ℃ and 100 ℃, the friction coefficient and wear rate of PAO4 base oil increased with respect to that of the original one. Under 25 ℃ and 150 ℃, the effect of surface texture on the friction and wear Is not large; the friction coefficient of the lubricating oil containing graphene is lower when the textured area ratio is 5% at different temperatures, the friction coefficient is higher when the textured area ratio is 20%, and the wear rate is 10% when the textured area ratio is 10% Lower.