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The lubrication effect of different vegetable oil-based greases on steel-steel tribo-pair

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Abstract

The rising environmental concerns and the challenges to enhance the tribo-performance of conventional lubricants have gained considerable attention these days. In this context, castor oil and coconut oil thickened with lithium soap were prepared for a stable and consistent grease. The physicochemical and tribological performances of castor and coconut greases were assessed as per the ASTM standards. The formulated lithium-based paraffin grease was used as reference grease to compare various physicochemical and lubrication behavior of castor and coconut greases. Castor grease demonstrated superior tribological performance than paraffin grease. The formation of a fatty acids–derived protective thin film of high shear strength enhanced the lubrication properties. It will be a new lubricant formulation, where energy conservation and environmental sustainability are the prime consideration.

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The data that support the findings of this study are available on request from the corresponding author. The data are not publicly available due to privacy or ethical restrictions.

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Acknowledgements

The authors are grateful to the Department of Mechanical Engineering and Central Instrument facility, IIT(BHU), Varanasi (India), and Analytical Science Division of CSIR–IIP, Dehradun (India), for their support during experimental work and analytical facilities.

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Sooraj Singh Rawat: Conceptualization, validation, investigation, writing—original draft

A. P. Harsha: Investigation, validation, writing—review and editing, project administration, supervision

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Correspondence to A. P. Harsha.

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Rawat, S.S., Harsha, A.P. The lubrication effect of different vegetable oil-based greases on steel-steel tribo-pair. Biomass Conv. Bioref. 14, 1993–2005 (2024). https://doi.org/10.1007/s13399-022-02471-8

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