MoS2/WS2 Quantum Dots as High-Performance Lubricant Additive in Polyalkylene Glycol for Steel/Steel Contact at Elevated Temperature

Xinhu Wu; Kuiliang Gong; Gaiqing Zhao; Wenjing Lou; Xiaobo Wang; Weimin Liu

doi:10.1002/admi.201700859

MoS₂/WS₂ Quantum Dots as High-Performance Lubricant Additive in Polyalkylene Glycol for Steel/Steel Contact at Elevated Temperature

Xinhu Wu, Kuiliang Gong, Gaiqing Zhao, Wenjing Lou, Xiaobo Wang, Weimin Liu

Research output: Contribution to journal › Article › peer-review

74 Scopus citations

Abstract

Herein, molybdenum disulfide (MoS₂) and tungsten disulfide (WS₂) 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 MoS₂/WS₂ QDs exhibits significant tribological properties compared with pure PAG and PAG containing MoS₂/WS₂ QDs nanosheets under different loads at elevated temperatures. The excellent tribological behaviors of MoS₂/WS₂ QDs are attributed to the formation of a boundary lubrication film, which can be generated not only by the physical entrapment of MoS₂/WS₂ QDs at the ball-disk contact surfaces, but also by tribochemical reaction between MoS₂/WS₂ and the iron atoms/iron oxide species.

Original language	English
Article number	1700859
Journal	Advanced Materials Interfaces
Volume	5
Issue number	1
DOIs	https://doi.org/10.1002/admi.201700859
State	Published - 9 Jan 2018
Externally published	Yes

Keywords

friction reduction and antiwear
high-temperature lubricant
lubricant additive
MoS/WS quantum dots

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10.1002/admi.201700859

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title = "MoS2/WS2 Quantum Dots as High-Performance Lubricant Additive in Polyalkylene Glycol for Steel/Steel Contact at Elevated Temperature",

abstract = "Herein, molybdenum disulfide (MoS2) and tungsten disulfide (WS2) 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 MoS2/WS2 QDs exhibits significant tribological properties compared with pure PAG and PAG containing MoS2/WS2 QDs nanosheets under different loads at elevated temperatures. The excellent tribological behaviors of MoS2/WS2 QDs are attributed to the formation of a boundary lubrication film, which can be generated not only by the physical entrapment of MoS2/WS2 QDs at the ball-disk contact surfaces, but also by tribochemical reaction between MoS2/WS2 and the iron atoms/iron oxide species.",

keywords = "friction reduction and antiwear, high-temperature lubricant, lubricant additive, MoS/WS quantum dots",

author = "Xinhu Wu and Kuiliang Gong and Gaiqing Zhao and Wenjing Lou and Xiaobo Wang and Weimin Liu",

note = "Publisher Copyright: {\textcopyright} 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2018",

month = jan,

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doi = "10.1002/admi.201700859",

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T1 - MoS2/WS2 Quantum Dots as High-Performance Lubricant Additive in Polyalkylene Glycol for Steel/Steel Contact at Elevated Temperature

AU - Wu, Xinhu

AU - Gong, Kuiliang

AU - Zhao, Gaiqing

AU - Lou, Wenjing

AU - Wang, Xiaobo

AU - Liu, Weimin

PY - 2018/1/9

Y1 - 2018/1/9

N2 - Herein, molybdenum disulfide (MoS2) and tungsten disulfide (WS2) 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 MoS2/WS2 QDs exhibits significant tribological properties compared with pure PAG and PAG containing MoS2/WS2 QDs nanosheets under different loads at elevated temperatures. The excellent tribological behaviors of MoS2/WS2 QDs are attributed to the formation of a boundary lubrication film, which can be generated not only by the physical entrapment of MoS2/WS2 QDs at the ball-disk contact surfaces, but also by tribochemical reaction between MoS2/WS2 and the iron atoms/iron oxide species.

AB - Herein, molybdenum disulfide (MoS2) and tungsten disulfide (WS2) 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 MoS2/WS2 QDs exhibits significant tribological properties compared with pure PAG and PAG containing MoS2/WS2 QDs nanosheets under different loads at elevated temperatures. The excellent tribological behaviors of MoS2/WS2 QDs are attributed to the formation of a boundary lubrication film, which can be generated not only by the physical entrapment of MoS2/WS2 QDs at the ball-disk contact surfaces, but also by tribochemical reaction between MoS2/WS2 and the iron atoms/iron oxide species.

KW - friction reduction and antiwear

KW - high-temperature lubricant

KW - lubricant additive

KW - MoS/WS quantum dots

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DO - 10.1002/admi.201700859

M3 - 文章

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SN - 2196-7350

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JO - Advanced Materials Interfaces

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ER -

MoS₂/WS₂ Quantum Dots as High-Performance Lubricant Additive in Polyalkylene Glycol for Steel/Steel Contact at Elevated Temperature

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Keywords

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