The lubrication of both aluminium–silicon and model silicon surfaces with calcium sulphonate and an organic antiwear additive

Burkinshaw, Michael; Neville, Anne; Morina, Ardian; Sutton, Mike

doi:10.1016/j.triboint.2013.07.006

Cited by 7 publications

(11 citation statements)

References 21 publications

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“…A review of ZDDP tribofilms generated on ferrous surfaces is presented elsewhere, 16 but Table 3 collates the findings from various researchers using ZDDP to lubricate an iron based substrate.…”

Section: Mechanical Properties Of Zddp Tribofilms On Alsi Alloysmentioning

confidence: 99%

“…CaCO 3 based films were again obtained solely on silicon regions of the AlSi alloy, but the organic additive had decreased the porosity and pad size of the calcium sulphonate derived tribofilm. 29 A reduction in wear compared to calcium sulphonate was ascribed to a deviation in both film porosity and mechanical properties. 29 The chemistry of a worn Al-Si cylinder liner, which had been under test in a fired dynamometer and lubricated with commercially available oil, was studied by Dienwiebel et al 30 using auger electron spectroscopy.…”

Section: Al-si Surfaces Lubricated With Detergents Detergents Lubricamentioning

confidence: 99%

“…2,3,5,38 Such traits have also been witnessed on aluminium-silicon and model silicon surfaces. 16 Films generated from calcium sulphonate provide wear protection to a tribosystem through the separation of the interacting substrates, 39 in conjunction with sacrificial wear and shear. 3 Overbased calcium sulphonate reduces the wear in a contact compared to the neutral form of the molecule.…”

Section: Antiwear Characteristics Of Overbased Calcium Sulphonate On mentioning

confidence: 99%

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Lubrication of aluminium–silicon surfaces with ZDDP and detergents

Burkinshaw

Neville

Morina

et al. 2012

Tribology - Materials, Surfaces & Interfaces

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A review of the lubrication of aluminium-silicon (Al-Si) substrates by zinc dialkyldithiophosphate (ZDDP) and detergent engine oil additives is presented. Greater attention has been paid to understand the interactions of ZDDP, rather than detergents, with the aforementioned non-ferrous substrates. Zinc dialkyldithiophosphate generates tribofilms on both aluminium and silicon regions of aluminium-silicon alloys. However, film formation is believed to occur on silicon grains within the alloy, and those layers observed on aluminium regions are material transfer or the product of ZDDP thermal decomposition. There were many similarities in terms of film thickness, reduced elastic modulus, tribochemistry and topography of ZDDP derived tribofilms on both ferrous and Al-Si substrates. Calcium carbonate based films were observed on silicon grains when the aluminium alloys were lubricated with overbased calcium sulphonate, the tribochemistry and topography of which were similar to layers formed on ferrous substrates. When lubricated with either fully formulated oil or lubricants containing both detergent and ZDDP, the subsequently generated films were of varying chemistry, but often contained zinc or calcium phosphate compounds. The antiwear characteristics of ZDDP and calcium sulphonate tribofilms on ferrous and aluminium-silicon substrates are discussed, with the mechanical and film thickness data for such layers presented.

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Section: Mechanical Properties Of Zddp Tribofilms On Alsi Alloysmentioning

confidence: 99%

Section: Al-si Surfaces Lubricated With Detergents Detergents Lubricamentioning

confidence: 99%

Section: Antiwear Characteristics Of Overbased Calcium Sulphonate On mentioning

confidence: 99%

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Lubrication of aluminium–silicon surfaces with ZDDP and detergents

Burkinshaw

Neville

Morina

et al. 2012

Tribology - Materials, Surfaces & Interfaces

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“…Lubrication can effectively reduce friction and wear, and many scholars have investigated lubrication characteristics in order to improve the antiwear performance of the system. In order to reduce friction and wear, calcium sulfonate and an organic antiwear additive have been blended into lubricant to study the wear of the PRCL system, and a large-scale friction film has been produced on the contact surface (Burkinshaw et al, 2013). As an engine additive, liquid boron has been used to improve the lubrication properties of the engine, and the wear performance has been found to be significantly improved compared with an engine without additive lubricating oil (Ogut et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the tribological characteristics of a honed cylinder liner during the running-in process

et al. 2022

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Abstract. The tribological properties of the cylinder liner are of great significance in reducing energy loss from an internal combustion engine's system. In order to improve the antiwear performance of the cylinder liner at top dead center (TDC), the friction and wear of the honed cylinder liner during the running-in process are investigated. Using a UMT TriboLab multifunction friction wear tester, the coefficients of friction (COFs) are analyzed under different lubrication conditions and loads, and the surface roughness and profile of the cylinder liner are obtained using a three-dimensional (3D) laser scanning confocal microscope (LSCM). The COF, roughness and surface profile are compared in order to investigate the variation in tribology parameters under different operating conditions. To monitor the COF in real time, it is predicted using the polynomial fitting method. It is shown that the COF decreases with an increase in the lubrication oil and load and that the surface profile more easily becomes smooth under dry (lubrication) conditions; this can effectively shorten the operation time during the running-in process. The polynomial fitting method can achieve an assessment of the COF with a very small standard error.

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“…Nanotribology as a scientific discipline emerged, which comprises the investigation and control of tribological properties on the nanometer scale down to atoms and molecules [1][2][3][4][5][6][7]. Surface layers and surface ad-layers in general provide very interesting options here [8][9][10][11][12][13]. In the case of MEMS, it is particularly important to use surface layers or lubricants that are molecularly thick, easy applied, insensitive to environment and highly durable.…”

Section: Introductionmentioning

confidence: 99%

Influence of Alkali Ions on Tribological Properties of Silicon Surface

et al. 2015

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Tribological properties of surfaces (friction, adhesion and wear) provide challenging limitations to the design of reliable machines on the micro-and nanometer scale as the surface to volume area increases and volume, mass and inertia of the mobile parts decrease. This study reports on the reduction in the friction force of silicon surfaces after the alkali metal ion exposure in the form of aqueous solutions. A scanning force microscope equipped with a liquid cell was used to investigate the friction force and the pull-off force of a flat silicon surface immersed in water and in different alkali metal chlorides solutions: LiCl, NaCl and CsCl. The concentration ranged from 0.1 up to 1000 lmol/l. The changes in the free surface energy of the initial surface and of the modified surfaces after drying were determined from contact angle measurements and from the acid-base adhesion theory. In both cases, in the liquid environment and after drying of the exposed silicon substrates in air, the friction force is reduced by approximately 50 %. Our results provide new, fundamental insight into the exchange of surface termination layers in particular for tribology. Also it is suggested to use the procedure as a low-cost alternative to improve the tribological properties of the silicon surface in particular in applications where lubricating fluids are not appropriate, e.g., in nanomachines and devices.

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The lubrication of both aluminium–silicon and model silicon surfaces with calcium sulphonate and an organic antiwear additive

Cited by 7 publications

References 21 publications

Lubrication of aluminium–silicon surfaces with ZDDP and detergents

Lubrication of aluminium–silicon surfaces with ZDDP and detergents

Experimental study of the tribological characteristics of a honed cylinder liner during the running-in process

Influence of Alkali Ions on Tribological Properties of Silicon Surface

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