润滑油
材料科学
二硫化钨
二硫化钼
摩擦学
基础油
摩擦改进剂
钨
润滑
冶金
碳化钨
分散稳定性
纳米技术
钼
量子点
复合材料
化学工程
纳米颗粒
扫描电子显微镜
工程类
作者
Xinhu Wu,Kuiliang Gong,Gaiqing Zhao,Wenjing Lou,Xiaobo Wang,Weimin Liu
标识
DOI:10.1002/admi.201700859
摘要
Abstract Herein, molybdenum disulfide (MoS 2 ) and tungsten disulfide (WS 2 ) quantum dots (QDs) are prepared by a facile and green technique, and characterized by microscopy and spectroscopy. The resulting products display exceptional stability in polyalkylene glycol (PAG) base oil, and are used for the first time as friction reducing and antiwear additives in PAG for steel/steel contact. Tribological measurements indicate that the stable dispersion consisting of PAG mixed with MoS 2 /WS 2 QDs exhibits significant tribological properties compared with pure PAG and PAG containing MoS 2 /WS 2 QDs nanosheets under different loads at elevated temperatures. The excellent tribological behaviors of MoS 2 /WS 2 QDs are attributed to the formation of a boundary lubrication film, which can be generated not only by the physical entrapment of MoS 2 /WS 2 QDs at the ball‐disk contact surfaces, but also by tribochemical reaction between MoS 2 /WS 2 and the iron atoms/iron oxide species.
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