The correlation between ZDDP tribofilm morphology and the microstructure of steel
The correlation between ZDDP tribofilm morphology and the microstructure of steel
The microstructure of most hard steels used in tribological applications is inhomogeneous at a micro-scale. This results in local variations in chemical composition and mechanical properties. On a similar scale, tribofilms formed by ZDDP and other anti-wear additives are commonly observed to exhibit a patch-like morphology. ZDDP tribofilms formed under controlled contact conditions on four different steel grades were carefully studied with a new AFM technique to analyse the relationship between the steel microstructure and the tribofilm morphology. Tribofilms were found to be thinner on residual carbides than on the martensitic matrix in all grades containing residual carbides. In most cases, the difference in tribofilm thickness is larger than the carbide protrusion.
Atomic force microscopy, Lubricant additives, Surface structure, Tribochemistry
13-25
Jelita Rydel, J.
7ec5bf19-b926-4519-af16-17b0816e48d1
Pagkalis, K.
ecd15e0f-d173-47ee-b556-68aea6620788
Kadiric, A.
4a9cea02-9fcf-4570-98c4-8d6d3ec067c3
Rivera-Díaz-del-Castillo, P.E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
26 May 2017
Jelita Rydel, J.
7ec5bf19-b926-4519-af16-17b0816e48d1
Pagkalis, K.
ecd15e0f-d173-47ee-b556-68aea6620788
Kadiric, A.
4a9cea02-9fcf-4570-98c4-8d6d3ec067c3
Rivera-Díaz-del-Castillo, P.E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
Jelita Rydel, J., Pagkalis, K., Kadiric, A. and Rivera-Díaz-del-Castillo, P.E.J.
(2017)
The correlation between ZDDP tribofilm morphology and the microstructure of steel.
Tribology International, 113, .
(doi:10.1016/j.triboint.2016.10.039).
Abstract
The microstructure of most hard steels used in tribological applications is inhomogeneous at a micro-scale. This results in local variations in chemical composition and mechanical properties. On a similar scale, tribofilms formed by ZDDP and other anti-wear additives are commonly observed to exhibit a patch-like morphology. ZDDP tribofilms formed under controlled contact conditions on four different steel grades were carefully studied with a new AFM technique to analyse the relationship between the steel microstructure and the tribofilm morphology. Tribofilms were found to be thinner on residual carbides than on the martensitic matrix in all grades containing residual carbides. In most cases, the difference in tribofilm thickness is larger than the carbide protrusion.
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Accepted/In Press date: 12 October 2016
e-pub ahead of print date: 29 October 2016
Published date: 26 May 2017
Additional Information:
Publisher Copyright:
© 2016 Elsevier Ltd
Keywords:
Atomic force microscopy, Lubricant additives, Surface structure, Tribochemistry
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Local EPrints ID: 492411
URI: http://eprints.soton.ac.uk/id/eprint/492411
ISSN: 0301-679X
PURE UUID: 00c5e6f9-4639-4a74-8068-b1d228a92000
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Date deposited: 26 Jul 2024 16:31
Last modified: 27 Jul 2024 02:08
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Author:
J. Jelita Rydel
Author:
K. Pagkalis
Author:
A. Kadiric
Author:
P.E.J. Rivera-Díaz-del-Castillo
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