Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
The correlation between ZDDP tribofilm morphology and the microstructure of steel. / Jelita Rydel, J.; Pagkalis, K.; Kadiric, A. et al.
In: Tribology International, Vol. 113, 09.2017, p. 13-25.Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - The correlation between ZDDP tribofilm morphology and the microstructure of steel
AU - Jelita Rydel, J.
AU - Pagkalis, K.
AU - Kadiric, A.
AU - Rivera-Díaz-del-Castillo, P. E. J.
PY - 2017/9
Y1 - 2017/9
N2 - 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.
AB - 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.
KW - Atomic force microscopy
KW - Lubricant additives
KW - Surface structure
KW - Tribochemistry
U2 - 10.1016/j.triboint.2016.10.039
DO - 10.1016/j.triboint.2016.10.039
M3 - Journal article
AN - SCOPUS:85006721273
VL - 113
SP - 13
EP - 25
JO - Tribology International
JF - Tribology International
SN - 0301-679X
ER -