Microstructure, mechanical properties and tribological behavior of tribofilm generated from natural serpentine mineral powders as lubricant additive

Yu, Helong; Xu, Yi; Shi, Pei-jing; Wang, Hongmei; Wei, Min; Zhao, Keke; Xu, Bin

doi:10.1016/j.wear.2012.10.013

Cited by 94 publications

(39 citation statements)

References 17 publications

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“…Further abrasive wear may occur as a secondary phenomenon due to the plowing action of the adhesive wear debris (figure d). In contrast, the result addresses that NbTe 2 nanosheets, which possess smaller longitudinal size and excellent dispersion in lubricating oil, could be easily trapped in the asperities to form an available and continuous tribofilm , thereby changing ball‐on‐flat contact into ball‐on‐tribofilm contact (figure (c, e)) . Therefore, the NbTe 2 nanosheets in base oil present outstanding friction‐reducing and anti‐wear properties.…”

Section: Resultsmentioning

confidence: 91%

Facile synthesis of ultrathin NbTe₂ nanosheets for enhanced tribological properties as a lubricant additive

Dong

Yang

et al. 2016

Crystal Research and Technology

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Graphite-like bulk NbTe 2 powders were prepared by a facile solid phase synthesis process and ultrathin NbTe 2 nanosheets were obtained by using wet ball milling induced delamination. The X-ray diffraction analysis illustrated that the reduction of particle size was mainly along the stacking direction of the basal planes without great influence on the short range order of NbTe 2 crystals. Scanning electron microscopy, transmission electron microscopy, and atomic force microscope observations revealed that the longitudinal dimension of NbTe 2 samples changed into the nanoscale from the larger micron level after mechanical exfoliation. The exfoliated NbTe 2 nanosheets had better longterm dispersion stability in paraffin oil than bulk NbTe 2 . The tribological properties were determined on an UMT-2 ball-on-disk friction and wear tester. The results indicated that the paraffin oil with NbTe 2 nanosheets exhibited better lubricating behaviors with the lower friction coefficient and wear rate in comparison with the bulk NbTe 2 . It was demonstrated that NbTe 2 nanosheets could easily enter into a point of friction contact, and form an available tribofilm to prevent the direct contact between counterparts during the friction process. Furthermore, this work shows the potential applications of ultrathin NbTe 2 nanosheets in the field of tribology.

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Section: Resultsmentioning

confidence: 91%

Facile synthesis of ultrathin NbTe₂ nanosheets for enhanced tribological properties as a lubricant additive

Dong

Yang

et al. 2016

Crystal Research and Technology

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“…34 In terms of minerals as additives for lubricating oil, layered structure minerals such as serpentine possess good anti-wear properties and thermal stabilities. [35][36] Our previous work shows that the addition of Mg/Al and Co/Al hydrotalcite to lubricant oil can decrease the friction coefficient and improve wear protection. [37][38] Zhang et al [39][40] studied the tribological behaviors of serpentine and Cu powders on steel surface under sliding friction.…”

Section: Page 2 Of 34mentioning

confidence: 99%

“…It is obvious to see the numerous scratches on the worn surface along the sliding direction. It shows severe abrasive and adhesive wear36 . In the enlarged morphology (Fig.…”

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confidence: 99%

Preparation of platy Co/Al hydrotalcites using aluminum hydroxide and investigation of their tribological properties in base oil

et al. 2015

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In this study the synthesis of Co/Al hydrotalcite (layered double hydroxides: LDH) using insoluble Al(OH) 3 by hydrothermal method is described. The syntheses were conducted under various conditions. The as-prepared Co/Al-CO 3 2--LDH was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The tribological properties of the products were evaluated in base oil using four-ball and plint friction testers. The LDH thus synthesized displays perfect hexagonal plate-like morphology having a disk diameter in a range of 0.2-1.5µm with a thickness of 40nm. Addition of the product Co/Al-CO 3 2--LDH, as additive to the base oil, significantly reduces the friction coefficient (22.3%) and wear (26.1%), compared to base oil alone. The morphology and chemistry of the worn surface were characterized by SEM, atomic force microscope (AFM) and X-ray absorption near edge structures (XANES) spectroscopy. The results show that the structural distortion of LDH induced by mechanochemical processes during friction consumes the friction force between the rubbed surfaces and as a result the friction and the wear is reduced. Thus our results show that the LDH sheets absorbed on the worn surface can prevent direct contact between the friction pairs (surfaces) and decreases the roughness of the worn surface.

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“…A large number of literatures had indicated that adding particles into lubricants was effective in improving their lubricity. Some previous studies had explored synthesis and tribological performance of several components like Co, Cu, Zn, graphene, MoS 2 , WS 2 , CaCO 3 , and ZDDP [1][2][3][4][5][6][7][8][9][10][11][12][13] and displayed that the particles of these materials could provide various benefits like friction reducing, wear resistance, high fuel efficiency, energy savings, and low pollution. Nevertheless, with the development of modern industry, there was an increasing demand for the lubricants which could supply lubrication in a wide scope of temperatures for extreme operating condition.…”

Section: Introductionmentioning

confidence: 99%

Study on tribological properties of zinc perrhenate in oil‐based hybrid lubrication system over a broad temperature range

Wang

Zhang

et al. 2018

Lubrication Science

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The zinc perrhenate used as oil additive was synthesised via aqua‐solution method and was dispersed into pentaerythritol ester with the surface‐active agents. The tribological properties of lubricants were examined by 4‐ball tester and ball‐on‐disc testing machine. Additional investigations were performed using XRD, XPS, SEM‐EDS, and DTA/TG to probe the possible lubricating mechanism. Four‐ball test results showed compared to base oil, the friction coefficient and wear scar diameter of oil with zinc perrhenate additive were reduced by 14.9% and 16.6%, suggesting that zinc perrhenate additive could improve the lubricating property of base oil under 4‐ball test condition. Frictional tests under a wide temperature range indicated that oil with zinc perrhenate additive exhibited friction‐reducing performance during elevated temperature process because of its intrinsic shear susceptible property and could form a protective layer with native oxides of the disc sample at the interface, thus significantly minimised friction.

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Microstructure, mechanical properties and tribological behavior of tribofilm generated from natural serpentine mineral powders as lubricant additive

Cited by 94 publications

References 17 publications

Facile synthesis of ultrathin NbTe₂ nanosheets for enhanced tribological properties as a lubricant additive

Facile synthesis of ultrathin NbTe₂ nanosheets for enhanced tribological properties as a lubricant additive

Preparation of platy Co/Al hydrotalcites using aluminum hydroxide and investigation of their tribological properties in base oil

Study on tribological properties of zinc perrhenate in oil‐based hybrid lubrication system over a broad temperature range

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Microstructure, mechanical properties and tribological behavior of tribofilm generated from natural serpentine mineral powders as lubricant additive

Cited by 94 publications

References 17 publications

Facile synthesis of ultrathin NbTe2 nanosheets for enhanced tribological properties as a lubricant additive

Facile synthesis of ultrathin NbTe2 nanosheets for enhanced tribological properties as a lubricant additive

Preparation of platy Co/Al hydrotalcites using aluminum hydroxide and investigation of their tribological properties in base oil

Study on tribological properties of zinc perrhenate in oil‐based hybrid lubrication system over a broad temperature range

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Facile synthesis of ultrathin NbTe₂ nanosheets for enhanced tribological properties as a lubricant additive

Facile synthesis of ultrathin NbTe₂ nanosheets for enhanced tribological properties as a lubricant additive