A variable temperature mechanical analysis of ZDDP-derived antiwear films formed on 52100 steel

Pereira, Gavin; Munoz-Paniagua, David; Lachenwitzer, A.; Kasrai, M.; Norton, P. R.; Capehart, T. W.; Perry, Thomas A.; Cheng, Yang‐Tse

doi:10.1016/j.wear.2006.06.016

Cited by 64 publications

(58 citation statements)

References 36 publications

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“…Also shown in this figure are spectra for concentrated ZDDP additive (in liquid form dispersed on a steel sample) and Zn phosphate powder at room temperature. In agreement with the previous XANES work of ZDDP additive done in a vacuum environment [44,45], the P K-edge peak observed for the concentrated ZDDP additive is at 2150 eV and for the Zn phosphate is at 2152.3 eV. Comparing the spectrum of concentrated ZDDP additive on steel with the spectra obtained after heating the lubricated sample, it can be observed that there is no chemical shift of the P K-edge peak indicating that the layer of the ZDDP adsorbed on the surface is only un-reacted ZDDP additive.…”

Section: Tribology Test Conditionssupporting

confidence: 90%

In-situ reflection-XANES study of ZDDP and MoDTC lubricant films formed on steel and diamond like carbon (DLC) surfaces

Morina

Zhao

Mosselmans

2014

Applied Surface Science

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Chemical characterisation of boundary lubricated interfaces is essential for developing mechanistic models that describe lubricant additive interactions with the surface and their effect on tribological performance. In this study the potential for using the synchrotron-based reflection mode X-ray absorption spectroscopy (XAS) technique for in-situ chemical characterisation of lubricant films has been studied.

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Section: Tribology Test Conditionssupporting

confidence: 90%

In-situ reflection-XANES study of ZDDP and MoDTC lubricant films formed on steel and diamond like carbon (DLC) surfaces

Morina

Zhao

Mosselmans

2014

Applied Surface Science

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“…A second effect is the effect temperature has on the mechanical properties [18,36]. In both studies, it is shown that the influence of the temperature on the equivalent modulus is limited up to temperatures in the range of 100°C, as shown in Fig.…”

Section: Modelmentioning

confidence: 91%

“…Because of the fact that the environmental regulations are becoming more restrictive concerning phosphorous and sulphur containing additives [6], the usage of ZDDP is restricted more and more. This results in the fact that a lot of research is currently done in understanding the mechanism behind the excellent antiwear properties of this additive [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] to eventually produce a more environment-friendly additive with the same excellent wear protection like ZDDP. These studies give a good overview of the film formed by this specific additive package; however, up to now, only little of this information is indeed used to model mild wear present in systems lubricated using a lubricant containing ZDDP.…”

Section: Introductionmentioning

confidence: 99%

Mild Wear Prediction of Boundary-Lubricated Contacts

Bosman

Schipper

2011

Tribol Lett

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In this paper, a wear model is introduced for the mild wear present in boundary-lubricated systems protected by additive-rich lubricants. The model is based on the hypothesis that the mild wear is mainly originating from the removal of the sacrificial layer formed by a chemical reaction between the base material and the additive packages present in the lubricant. By removing a part of this layer, the chemical balance of the system is disturbed and the system will try to restore the balance for which it uses base material. In this study, mechanical properties reported throughout literature are included into the wear model based on observed phenomena for this type of systems. The model is validated by model experiments and the results are in very good agreement, suggesting that the model is able to simulate wear having a predictive nature rather than on empirical-based relationships as Archard's linear wear model. Also a proposal is made to include the transition from mild to severe wear into the model creating a complete wear map.

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“…It should be noted that Young's modulus was found to be largely independent of the temperature [33,34], i.e., within 25-200°C (at 220°C, the ZDDP tribo-film will start to degrade [35]), while the hardness does depend on temperature [33]. Bosman and Schipper [36] proposed a compensation factor for the hardness as a function of temperature.…”

Section: Tribo-film Growth and Its Mechanical Modelmentioning

confidence: 99%

A Deterministic Stress-Activated Model for Tribo-Film Growth and Wear Simulation

Akchurin

Bosman

2017

Tribol Lett

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A new model was developed for the simulation of growth and wear of tribo-chemical films by combining a boundary element method-based contact model and a stress-activated Arrhenius tribo-film growth equation. Using this methodology, it is possible to predict the evolution and steady-state thickness of the tribo-film (selflimitation) at various operating conditions. The model was validated using two cases for which experimental data were available in the literature. The first case is a single microscopic contact consisting of a DLC-coated AFM tip and an iron-coated substrate. The second case is a macroscale contact between a bearing steel ball and disk. Subsequently, mild wear (wear after running-in) was modeled by assuming diffusion of the substrate atoms into the tribofilm.

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A variable temperature mechanical analysis of ZDDP-derived antiwear films formed on 52100 steel

Cited by 64 publications

References 36 publications

In-situ reflection-XANES study of ZDDP and MoDTC lubricant films formed on steel and diamond like carbon (DLC) surfaces

In-situ reflection-XANES study of ZDDP and MoDTC lubricant films formed on steel and diamond like carbon (DLC) surfaces

Mild Wear Prediction of Boundary-Lubricated Contacts

A Deterministic Stress-Activated Model for Tribo-Film Growth and Wear Simulation

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