The structure of lubricating layers appearing during friction in the presence of additives of mineral friction modifiers

Dolgopolov, Kirill; Lyubimov, D. N.; Ponomarenko, A. G.; Chigarenko, G. G.; Boiko, M. V.

doi:10.3103/s1068366609050134

Cited by 16 publications

(10 citation statements)

References 2 publications

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“…Nan et al [7] also used 0.5 wt% as an optimum concentration of ultrafine magnesium aluminum silicate powders, as lubricant additive in SRV oscillating friction and wear tester and found that ultrafine powder was very efficient in reducing friction and wear at different loads (10 N-100 N). Tribological characteristics of serpentine powder used in engine oil or base oil with respect to formation of tribofilm, surface modifying capabilities, reduction of friction coefficient, and wear was extensively studied by many other researchers [8][9][10][11][12][13]. Similar results on reduction of friction coefficients by 24.63% and diameters of friction spots by 41.88% as compared to the base oil were reported by Zhao et al [14].…”

Section: Introductionsupporting

confidence: 52%

Friction Reduction Capabilities of Silicate Compounds Used in an Engine Lubricant on Worn Surfaces

Singh

Thakre

Konathala

et al. 2016

Advances in Tribology

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Effects of magnesium silicate and alumina dispersed in engine lubricant on friction, wear, and tribosurface characteristics are studied under boundary and mixed lubrication conditions. Magnesium silicate and alumina, henceforth called as friction reducing compounds (FRC), were dispersed in engine lubricant in very low concentration of 0.01% weight/volume. Four-ball wear test rig was used to assess friction coefficient and wear scar diameter of balls lubricated with and without FRC based engine lubricant. Scanning electron microscopy (SEM) equipped with Energy Dispersive X-ray (EDX) was used to analyse the tribosurface properties and elemental distributions on worn surfaces of the balls. Test results revealed that FRC based engine lubricant increases friction coefficient but marginally reduces wear scar diameter of new balls, whereas, test on the worn-out balls running on FRC based engine lubricants shows 46% reduction in friction coefficient compared to the new balls running on engine lubricants without FRC. Investigations on tribosurfaces with respect to morphology and elemental distribution showed the presence of Si and O elements in micropores of the worn surfaces of the balls, indicating role of FRC in friction coefficient reduction and antiwear properties. These FRC based engine lubricants may be used in the in-use engines.

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Section: Introductionsupporting

confidence: 52%

Friction Reduction Capabilities of Silicate Compounds Used in an Engine Lubricant on Worn Surfaces

Singh

Thakre

Konathala

et al. 2016

Advances in Tribology

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“…It is found that the difference of tribological performances AMNP-oil system: tests were applied to the various AMNP-oil systems in an effort to determine the tribological performances of antigorite. The principal devices used were the four-ball tester (FB), pin-on-disk tester (P-D) and pin-on-flat tester (P-F); however, ring-on-disk tester (R-D), rectangular flat on rotating cylinder tester (RF-RC), disk-on-disk tester (D-D), thrust washer tester (TW) and flat-on-cylinder tester (F-C) have also been used [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. AMNP used for the study had a particle size less than 3 microns, and most of them were less than 1 micron.…”

Section: Tribological Performances Of Antigoritementioning

confidence: 99%

“…The internal relationship among antigorite mineralogy-surface features of friction pairs-application performance is shown in Figure 15. Dolgopolov et al, found that the friction pair treated with AMNP has good wear resistance [16,17]. They thought that good wear resistance is due to the formation of a two-level structure on the rubbing surfaces.…”

Section: Mechanism Studymentioning

confidence: 99%

“…Significant progress has been achieved in the research and development of antigorite's application in the lubrication of machine components. The research results indicated that antigorite micro-nano powder (AMNP) may significantly reduce friction coefficient and wear of friction pairs, and be one kind of excellent anti-frictional and lubrication materials [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. This paper reviews the mineralogy, thermal decomposition, lubrication behavior and application of antigorite lubricant.…”

Section: Introductionmentioning

confidence: 99%

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Tribological Performance and Application of Antigorite as Lubrication Materials

Bai

Zhao

et al. 2020

Lubricants

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Antigorite is a Mg-rich 1:1 trioctahedral-structured layered silicate mineral. In recent decades, many studies have been devoted to investigating the tribological performance and application of antigorite as lubrication materials. This article provides an overview of the mineralogy, thermal decomposition and surface modifications of antigorite powders, as well as the recent advancement that has been achieved in using antigorite to reduce friction and wear of friction pairs. The tribological performance of antigorite powders and its calcined product in different lubricating media, such as oil, grease and solid composites have been comprehensively reviewed. The physico-chemical characteristics of surface layers of the friction pairs are discussed. Applications and mechanisms of lubricity and anti-wear of antigorite are highlighted.

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“…Lubricants and lubrication technology play key roles in reducing friction and wear of mechanical components, thereby ensuring their long-term safe operation and reliability [1][2][3][4]. Commonly, mineral oils [5], vegetable oils [6], and synthetic oils [7] were used as lubricants.…”

Section: Introductionmentioning

confidence: 99%

Preparation of polyimide-graphite composite and evaluation of its friction behavior at elevated temperatures

Tao-qi

Qiao

Tan

et al. 2015

Science and Engineering of Composite Materials

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In this paper, polyimide-graphite (PG) composite was prepared and used as a solid lubricant at elevated temperatures. PG composite was characterized by X-ray diffraction, and its thermal stability was evaluated based on thermogravimetric/differential thermal analysis and Fourier transform infrared spectrometry analysis. The results show that in PG composite, there was some interaction between the graphite (GR) and the polyimide (PI) matrix. Consequently, the PG composite exhibited better thermal stability than PI. The friction behavior of the PG composite sliding against steel at elevated temperatures (300-600°C at an interval of 100°C) was evaluated with a ring-on-ring tribometer. It was found that the PG composite exhibited excellent friction-reducing ability and good load-carrying capacity in the temperature range of 300-600°C and applied loads of 300-700 N. Moreover, this excellent lubricating performance of the PG composite might be attributed to its good thermal stability as a result of the interaction between the GR and the PI matrix. Therefore, PG composite could be used as an excellent solid lubricant under the high-temperature conditions.

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The structure of lubricating layers appearing during friction in the presence of additives of mineral friction modifiers

Cited by 16 publications

References 2 publications

Friction Reduction Capabilities of Silicate Compounds Used in an Engine Lubricant on Worn Surfaces

Friction Reduction Capabilities of Silicate Compounds Used in an Engine Lubricant on Worn Surfaces

Tribological Performance and Application of Antigorite as Lubrication Materials

Preparation of polyimide-graphite composite and evaluation of its friction behavior at elevated temperatures

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