Influence of ZDDP tribofilm on micropitting formation and progression

Zaihao Tian; Ping Lu; Shuncai Wang; Daniel Merk; Robert Wood

doi:10.1016/j.triboint.2024.109938

Influence of ZDDP tribofilm on micropitting formation and progression

Zaihao Tian, Ping Lu, Shuncai Wang, Daniel Merk, Robert Wood

Centre for Manufacturing and Materials

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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Abstract

This paper presents insights into how Zinc Dialkyl Dithiophosphate (ZDDP) influences the formation and progression of micropitting. Experimental investigations were conducted using a twin-disc tribometer in rolling-sliding contacts under mixed or boundary lubrication conditions, focusing on the impact of ZDDP on micropitting in bearing steel samples. Results show that ZDDP reduces wear and increases surface friction by forming a tribofilm. This facilitates micropitting formation, but also retards the progression of micropitting. It highlights that understanding the chemical and mechanical interactions at the tribological interface is essential for designing effective mitigation strategies for managing micropitting and avoiding related issues in bearing applications.

Original language	English
Article number	109938
Number of pages	12
Journal	Tribology International
Volume	199
Early online date	8 Jul 2024
DOIs	https://doi.org/10.1016/j.triboint.2024.109938
Publication status	Published - Nov 2024

Bibliographical note

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

Funder

The authors would like to thank the Engineering and Physical Sciences Research Council (EPSRC) funding: EP/S005463/1 Early detection of contact distress for enhanced performance monitoring and predictive inspection of machines for providing financial support for this work.

The authors would like to thank Schaeffler Technologies AG & Co. KG, Herzogenaurach, Germany for providing financial support and test samples for this work.

Funding

The authors would like to thank the Engineering and Physical Sciences Research Council (EPSRC) funding: EP/S005463/1 Early detection of contact distress for enhanced performance monitoring and predictive inspection of machines for providing financial support for this work. The authors would like to thank Schaeffler Technologies AG & Co. KG, Herzogenaurach, Germany for providing financial support and test samples for this work.

Funders	Funder number
Engineering and Physical Sciences Research Council	EP/S005463/1
Schaeffler Group

Keywords

Micropitting
ZDDP
Tribofilm
Friction

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10.1016/j.triboint.2024.109938Licence: CC BY

Lu2024VoRFinal published version, 11.9 MBLicence: CC BY

Cite this

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abstract = "This paper presents insights into how Zinc Dialkyl Dithiophosphate (ZDDP) influences the formation and progression of micropitting. Experimental investigations were conducted using a twin-disc tribometer in rolling-sliding contacts under mixed or boundary lubrication conditions, focusing on the impact of ZDDP on micropitting in bearing steel samples. Results show that ZDDP reduces wear and increases surface friction by forming a tribofilm. This facilitates micropitting formation, but also retards the progression of micropitting. It highlights that understanding the chemical and mechanical interactions at the tribological interface is essential for designing effective mitigation strategies for managing micropitting and avoiding related issues in bearing applications.",

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AU - Tian, Zaihao

AU - Lu, Ping

AU - Wang, Shuncai

AU - Merk, Daniel

AU - Wood, Robert

N1 - This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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AB - This paper presents insights into how Zinc Dialkyl Dithiophosphate (ZDDP) influences the formation and progression of micropitting. Experimental investigations were conducted using a twin-disc tribometer in rolling-sliding contacts under mixed or boundary lubrication conditions, focusing on the impact of ZDDP on micropitting in bearing steel samples. Results show that ZDDP reduces wear and increases surface friction by forming a tribofilm. This facilitates micropitting formation, but also retards the progression of micropitting. It highlights that understanding the chemical and mechanical interactions at the tribological interface is essential for designing effective mitigation strategies for managing micropitting and avoiding related issues in bearing applications.

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Influence of ZDDP tribofilm on micropitting formation and progression

Abstract

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Keywords

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