Pristine and Alkylated MoS2 Nanosheets for Enhancement of Tribological Performance of Paraffin Grease Under Boundary Lubrication Regime

被引：23
|
作者：
Rawat, Sooraj S. [1 ]
Harsha, A. P. [1 ]
Agarwal, Deepak P. [1 ]
Kumari, Sangita [2 ]
Khatri, Om P. [2 ]
机构：
[1] Banaras Hindu Univ, Indian Inst Technol, Dept Mech Engn, Varanasi 221005, Uttar Pradesh, India
[2] Indian Inst Petr, CSIR, Dehra Dun 248005, Uttarakhand, India
来源：
JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME | 2019年 / 141卷 / 07期
关键词：
paraffin grease; MoS2; nanosheets; friction; wear; lamellar structure; HYDROTHERMAL SYNTHESIS; NANOPARTICLES; ADDITIVES; FRICTION; OIL; ANTIWEAR; MECHANISMS; BEHAVIOR; TIO2;
D O I：
10.1115/1.4043606
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In the present study, lubricating grease was developed with paraffin oil and 12-lithium hydroxy stearate metal soap as a thickening agent. MoS2 nanosheets were synthesized by hydrothermal method and functionalized with 1-octadecanethiol (i.e., MoS2-ODT). The MoS2 and MoS2-ODT nanosheets were dispersed in the grease with different concentrations to evaluate its tribological performance. Tribological results unveiled that the addition of MoS2 nanosheets in grease appreciably reduced the coefficient of friction and mean wear volume of tribo-interfaces as compared with pure grease. Energy dispersive spectroscopy (EDS) spectrum revealed the deposition of MoS2 on the worn surface and confirmed a thin tribo-film which protects steel tribo-pair against wear.
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页数：12
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