Guo Junde, Peng Runling, Du Hang, Shen Yunbo, Li Yue, Li Jianhui, Dong Guangneng
School of Mechatronic Engineering, Xi'an Technological University, Xi'an 710021, China.
Institute of Machinery Manufacturing Technology, China Association of Employment Promotion, Mianyang 621900, China.
Nanomaterials (Basel). 2020 Jan 23;10(2):200. doi: 10.3390/nano10020200.
Molybdenum disulfide quantum dots (MoS QDs) are a promising lubricant additive for enhanced engine efficiency. In this study, MoS QDs were used as lubricating oil additives for ball-on-disc contact and had adequate dispersity in paroline oil, due to their super small particle size (~3 nm). Tribological results indicate that the friction coefficient of paroline oil with 0.3 wt.% MoS QDs reached 0.061, much lower than that of pure paroline oil (0.169), which is due to the formation of a stable tribo-film formed by the MoS, MoO, FeS, and FeSO composite within the wear track. Synergistic lubrication effects of the tribo-film and ball-bearing effect cooperatively resulted in the lowest friction and wear.
二硫化钼量子点（MoS QDs）是一种很有前景的用于提高发动机效率的润滑添加剂。在本研究中，MoS QDs被用作球盘接触的润滑油添加剂，由于其超小的粒径（约3 nm），在paroline油中具有足够的分散性。摩擦学结果表明，含0.3 wt.% MoS QDs的paroline油的摩擦系数达到0.061，远低于纯paroline油的摩擦系数（0.169），这是由于在磨损轨迹内由MoS、MoO、FeS和FeSO复合材料形成了稳定的摩擦膜。摩擦膜的协同润滑作用和滚珠轴承效应共同导致了最低的摩擦和磨损。
