Improvement of performance of lubricating materials with additives of clayey minerals

Lyubimov, D. N.; Dolgopolov, Kirill; Kozakov, A. T.; Никольский, А. В.

doi:10.3103/s1068366611060092

Cited by 11 publications

(11 citation statements)

References 2 publications

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“…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]. Lyubimov et al [15] reported the merits of Kaolin based powder over serpentine powder in terms of tribological characteristics.…”

Section: Introductionsupporting

confidence: 81%

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: 81%

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 majority of traditional greases are composed of petroleum and synthetic oils thickened with metal soaps and other agents such as clay, silica, carbon black and polytetrafluoroethylene [90]. In recent years, some researchers have added AMNP by 0.5-3.0% to a semisolid lubricant to evaluate its tribological performances [14,52,[74][75][76]. The results showed that those types of grease with AMNP have higher critical load and welding load and have lower friction pairs wear (Table 1, No.67 to 74).…”

Section: Tribological Performances Of Antigoritementioning

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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“…For instance, studies have shown that high-grade chrysotile asbestos can be used to produce pure magnesium compounds or hydrated silica (Kim and Chung, 2003;Wypych et al, 2005;Cheng and Hsu, 2006;Wang et al, 2006). Other researchers have tried to use asbestos as a fused magnesium phosphate (fertilizer) additive (Huang, 1953), for stearic acid adsorption (Berkheiser, 1982), for carbon dioxide sequestration (Schulze et al, 2004;Lin et al, 2008;Pronost et al, 2012), and even as a lubrication additive (Foresti et al, 2003;Lyubimov et al, 2011;Qi et al, 2012).…”

Section: Introductionmentioning

confidence: 98%

High-Temperature Transformation of Asbestos Tailings by Carbothermal Reduction

Huang

Pan

et al. 2013

Clays and clay miner.

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The production and industrial use of asbestos cement and other asbestos-containing materials have been restricted in most countries because of the potential detrimental effects on human health and the environment. Chrysotile is the most common form of asbestos and investigations into how to recycle this serpentine phyllosilicate mineral have attracted extensive attention. Chrysotile asbestos tailings can be transformed thermally, at high temperature, by in situ carbothermal reduction (CR). The CR method aims to maximize use of the chrysotile available and uses high temperatures and carbon to change the mineral form and structure of the chrysotile asbestos tailings. When chrysotile asbestos is employed as the raw material and coke (carbon) powder is used as the reducing agent for CR transformation, stable, hightemperature composites consisting of forsterite, stishovite, and silicon carbide are formed. Forsterite (Mg 2 SiO 4 ) was the most abundant crystalline phase formed in samples heat treated below 1500ºC. At 1600ºC, forsterite was exhausted through decomposition and b-SiC formed by reduction of stishovite. A larger proportion of b-SiC was generated as the carbon content was increased. This research revealed that both temperature and carbon addition play key roles in the transformation of chrysotile asbestos tailings.

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Improvement of performance of lubricating materials with additives of clayey minerals

Cited by 11 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

High-Temperature Transformation of Asbestos Tailings by Carbothermal Reduction

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