摘要
采用化学氧化还原法,得到的石墨烯薄片,用油酸、硬脂酸对其进行改性,通过分光光度法考察石墨烯作为润滑油添加剂的分散稳定性。使用四球摩擦磨损试验机考察了石墨烯分散液的摩擦学性能,利用扫描电镜和能谱仪对摩擦表面的微观形貌和组成结构进行了表征分析。结果表明:对石墨烯改性处理是将其均匀分散到润滑油中的必要条件,改性后的石墨烯分散液表现出良好的抗磨减摩性能,平均摩擦系数为0.078,降低约12%,磨斑直径也有明显下降,且实验验证了磨损表面有石墨烯颗粒堆积现象。
The graphene flakes obtained by using the chemical redox method were modified with oleic acid and stearic acid.The dispersion stability of graphene as a lubricating oil additive was investigated by spectrophotometry.The microstructure and composition of the graphene dispersion were characterized by using the scanning electron microscopy and energy dispersive spectroscopy.The tribological properties of the graphene dispersion were investigated by using a four-ball friction and wear tester.The microstructure and composition of the friction surface were characterized and analyzed via SEM and EDS.Results show that the graphene modified is evenly dispersed in lubricating oil are processed in a necessary condition,after the modification of graphene dispersion showed good antiwear and friction-reducing,the average friction coefficient was 0.078,reduce about 12%,grinding spot diameter also have declined obviously,and the wear surface is verified by the experiments has graphene grain accumulation phenomenon.
作者
董懿
张艳岗
刘勇
郭泽宇
白羽
郭巨寿
Dong Yi;Zhang Yan′gang;Liu Yong;Guo Zeyu;Bai Yu;Guo Jushou(School of Energy and Power Engineering,North University of China,Taiyuan 030051,China;The North General Power Group Co.,Ltd.,Shanxi Datong 037036,China)
出处
《机械科学与技术》
CSCD
北大核心
2020年第8期1295-1298,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(51605447)
山西省重点实验室基金项目(NFCM201703)资助。
关键词
石墨烯
分散
润滑
抗磨减摩
graphene
absorption
lubrication
anti-wear and anti-friction
