摘要
在四球摩擦磨损实验机摩擦区域添加了直流磁场发生装置,研究了添加经修饰的纳米WS2润滑油在直流磁场作用下的摩擦磨损性能,用扫描电镜(SEM)配合能谱仪(EDS)及X射线光电子能谱仪(X PS)对钢球磨斑区域表面形貌和典型元素的含量及化学状态进行了分析,并探讨了相关的摩擦学机理。实验结果表明:经修饰后的纳米WS2在150SN基础油中稳定性良好,含纳米WS2的润滑油体现出更好的润滑性能,在纳米WS2含量相同时,直流磁场下的润滑油抗磨减摩效果更好。直流磁场对纳米WS2有一定的聚集效应,并会提高摩擦化学反应发生的概率。
A DC magnetic field generator was assembled around the friction region in a four-ball tester. The tribological properties of 150SN base oil and lubricating oil containing modified nano-WS2 under and without DC magnetic field were studied by modified tribo-tester. The morphology, the content and chemical species of typical elements on the worn surfaces lubricated with the tested oil were examined by SEM-EDS and XPS, and then the tribological mechanism was discussed. The results indicate that the modified nano-WS2 has good stability in 150SN base oil. The lubricating oil containing nano-WS2 exhibits better lubrication performance. In addition, when the nano-WS2 content is the same, the anti-wear and friction reduction effect of the lubricating oil under DC magnetic field is better. The DC magnetic field had a certain aggregation effect on nano-WS2 and could increase the possibility of tribochemical reaction.
作者
姜自超
方建华
江泽琦
王鑫
冯彦寒
丁建华
JIANG Zichao;FANG Jianhua;JIANG Zeqi;WANG Xin;FENG Yanhan;DING Jianhua(Department of Petrochemistry, Army Logistics University of PLA, Chongqing 401311, China;College of Pharmacy,Army Medical University of PLA, Chongqing 401311, China)
出处
《化工学报》
EI
CAS
CSCD
北大核心
2019年第7期2636-2644,共9页
CIESC Journal
基金
国家自然科学基金项目(51375491)
重庆自然科学基金项目(CSTC 2014JCYJAA50021,CSTC 2014JCYJAX0058)
重庆市研究生科研创新项目(CYB18128)
关键词
纳米粒子
分散
磨损
直流磁场
二硫化钨
摩擦学特性
表面分析
nanoparticles
dispersion
attrition
DC magnetic field
WS2
tribological properties
surface analysis
作者简介
第一作者:姜自超(1990-),男,博士研究生,614327919@qq.com;通信作者:方建华(1971-),男,博士,教授,fangjianhua71225@sina.com。
