In:
Friction, Springer Science and Business Media LLC, Vol. 9, No. 4 ( 2021-08), p. 789-801
Abstract:
The solid lubricant MoS 2 demonstrates excellent lubricating properties, but it spontaneously oxidizes and absorbs moisture in air, and thus results in poor wear resistance and short wear-life. In this study, the additive g-C 3 N 4 (CN) was successfully combined with MoS 2 via hydrothermal synthesis as a solid lubricant for the first time. Meanwhile, a low friction coefficient (COF, μ = 0.031) and ultra-long wear-life of CN/MoS 2 compared to pure MoS 2 in air were demonstrated. The functional groups and good crystallinity of the lubricant material were characterized via Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD). The formed valence states in CN/MoS 2 were analyzed via X-ray photoelectron spectroscopy (XPS). The characterized results of the scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM) show the morphology and interior crystal phase structure of CN/MoS 2 . From the cross-section analysis, the presence of iron oxide nanoparticles lubricating film is synergistic with CN/MoS 2 film during the friction process, resulting in its ultra-long wear-life. In particular, the friction mechanism of interlayer sliding friction combined with energy storage friction was analyzed and proposed.
Type of Medium:
Online Resource
ISSN:
2223-7690
,
2223-7704
DOI:
10.1007/s40544-020-0374-3
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2021
detail.hit.zdb_id:
2787589-1
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