Tribological performance of silicone oil based Al2O3 nano lubricant for an Mg alloy subjected to sliding at elevated temperatures

Wang, Yan; Zhang, Liangchi; Liu, Ang; Wu, Chuhan; Li, Wei

doi:10.1016/j.triboint.2022.107779

Cited by 16 publications

(5 citation statements)

References 48 publications

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“…Corundum (α-Al 2 O 3 ) powder [26][27] with a dispersity of 20-45 μm of spherical shape (LLC STC "INOX") was used as the sputtering material. Stainless steel 12X18H10T (AISI 321) was used as the substrate material.…”

Section: Methodsmentioning

confidence: 99%

Tribological and Mechanical Properties of Gradient Coating on Al2O3-Based Coating Produced by Detonation Spraying Methods

Rakhadilov,

Kakimzhanov,

Buitkenov

et al. 2023

Advances in Tribology

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This work is aimed at obtaining gradient coating of aluminum oxide (Al2O3) by detonation spraying. The influence of technological parameters of spraying on the formation of structure, phase composition. mechanical, and tribological characteristics of Al2O3 coatings have been investigated. It was determined that coatings obtained from the same raw powder materials under different technological conditions show different structural and phase characteristics. X-ray diffraction analysis showed that when the barrel is filled with gas mixture by 56%, the coating with the main phase α-Al2O3 is formed, and when the barrel is filled with gas mixture by 63%, the coating with the main phase γ-Al2O3, which is relatively more ductile than α-Al2O3, is formed. It is determined that the α-Al2O3 formed mainly on the surface provides good wear resistance. The bottom layer composed of γ-Al2O3 phase, which is relatively more ductile than α-Al2O3, provides good adhesion of the coating to the substrate. Tribological study showed that the coating obtained at 56% of filling shows good wear resistance compared to other samples. At 63% of filling the results of scratch test showed good adhesive strength. By varying the technological mode of detonation sputtering (56%, 53%, and 63%), Al2O3 coating with gradient structure was obtained, in which γ-Al2O3 smoothly transitions to α-Al2O3 from the substrate to the surface. The hardness of the coatings was found to increase smoothly from substrate to surface (12.4–14.2 GPa).

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Section: Methodsmentioning

confidence: 99%

Tribological and Mechanical Properties of Gradient Coating on Al2O3-Based Coating Produced by Detonation Spraying Methods

Rakhadilov,

Kakimzhanov,

Buitkenov

et al. 2023

Advances in Tribology

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“…Notably, the friction pair of steel/steel exhibited remarkable tribological performance, even when subjected to high loads, when lubricated with TRGO sheets. Another significant study by Wang et al [24] delved into the impact of GNP used as additives in commercial lubricants. The analysis considered two standard oils, one designed for aerospace applications and the other suitable for wind turbines, along with traditional grease for bearings.…”

Section: Additives Belong To Graphene and Silicon Familymentioning

confidence: 99%

Exploring the Impact of Additives on Tribological Characteristics in Lubricating Oils: A Critical Review

SS,

2024

EOIJ

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In mechanical systems, lubricants play a crucial role in minimizing friction, dissipating heat, and preventing wear. Additives, comprising both organic and inorganic compounds and typically constituting 0.1% to 30% of lubricant volume, are introduced to enhance lubricant performance. This study investigates the influence of various additives on lubricant behaviour and performance, encompassing antifoam agents, corrosion inhibitors, antioxidants, detergents, extreme pressure additives, pour-point depressants, and viscosity index improvers. Friction coefficients were meticulously measured using a pin-on-disk tribometer to assess the Tribological and physical properties of these additives. Surface analysis via SEM provided insights into wear characteristics influenced by the additives. The comprehensive tribological assessment reveals that the incorporation of additives consistently reduces friction and wear across different base oil types. This underscores the critical role of additives in improving lubricant properties, maintaining thermal stability, and forming protective films on surfaces. Our findings advocate for the strategic use of additives to enhance lubricant performance and longevity.

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“…The coefficient of friction (COF) is stable at a lower ambient temperature, i.e., 100 o C, but it experiences larger fluctuations at an elevated temperature. A possible reason for this may be the formation of a stable lubricant film at the contact interface under the lower temperature [17,45]. However, the significant drop in lubricant viscosity, i.e., a reduction from 50 mm 2 /s at RT to less than 10 mm 2 /s at and beyond 140 o C, lead to an extremely thin oil film or even the breakdown of the lubricating film at higher temperatures [46][47][48].…”

Section: Lubrication Performance Of the Silicone Oilmentioning

confidence: 99%

Experimental evaluation of a silicone oil as an oxidation inhibitor for magnesium alloy under contact sliding at elevated temperatures

Wang

Zhang

2022

Wear

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Tribological performance of silicone oil based Al2O3 nano lubricant for an Mg alloy subjected to sliding at elevated temperatures

Cited by 16 publications

References 48 publications

Tribological and Mechanical Properties of Gradient Coating on Al2O3-Based Coating Produced by Detonation Spraying Methods

Tribological and Mechanical Properties of Gradient Coating on Al2O3-Based Coating Produced by Detonation Spraying Methods

Exploring the Impact of Additives on Tribological Characteristics in Lubricating Oils: A Critical Review

Experimental evaluation of a silicone oil as an oxidation inhibitor for magnesium alloy under contact sliding at elevated temperatures

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