Effects of Ionic Liquid Additive Concentration on Scuffing and Wear in Oil-Starved EHL Contacts

Murthy, Nikhil K.; Berkebile, Stephen; Amarendra, K.; Hille, Eric; Ewin, Jeffrey J.

doi:10.1080/10402004.2018.1489087

Cited by 4 publications

(1 citation statement)

References 21 publications

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“…Unless there is an additional fluid supply, it is expected that the initial additive concentration will not be maintained over time as it moves. Murthy et al (2018) experimentally studied the effect of concentration of ionic liquid added to gearbox lubricant on lubrication performance under starved lubrication. It was found that there was a strong correlation between IL concentration and time to scuffing.…”

Section: Introductionmentioning

confidence: 99%

A scuffing model considering additive depletion in boundary lubrication

Lee

Cho

2019

ILT

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Purpose This paper aims to propose a new scuffing model caused by the depletion of additives in boundary lubrication condition. Design/methodology/approach The differential equation governing the distribution of additive content in the fluid film was used. This formula was derived from the principle of mass conservation of additives considering the consumption due to surface adsorption of wear particles. The occurrence of scuffing was determined by comparing the wear rate of the oxide layer with the oxidation rate. Findings If the additive becomes depleted while sliding, the scuffing failure occurs even at a low-temperature condition below the critical temperature. The critical sliding distance at which scuffing failure occurred was suggested. The experimental data of the existing literature and the theoretical prediction using the proposed model are shown to be in good agreement. Originality/value It is expected to be used in the design of oil supply grooves for sliding bearings operating under extreme conditions or in selecting the minimum initial additive concentration required to avoid scuffing failure under given contact conditions.

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Section: Introductionmentioning

confidence: 99%