Effects of Additives Adsorbed to Wet Clutch Disks on Their Tribological Performance Found in a Comparative Investigation

Besser C, Tomastik C, Lebel A, Baese M, Wirkner J, Strobl P, Völkel K, Stahl K (2025)

Publication Type: Journal article

Publication year: 2025

Journal

Lubricants MDPI

Book Volume: 13

Article Number: 369

Journal Issue: 8

DOI: 10.3390/lubricants13080369

Abstract

Tribolayer build-up was investigated on wet clutch steel disks with experiments in three different test levels of the tribological verification chain via X-ray photoelectron spectroscopy. A new characteristic value of the tribolayers was developed, i.e., the lateral elemental distribution uniformity. This value together with the parameters of additive elemental concentration as well as the thickness and the vertical composition of the layers were the basis for the subsequent correlation of the tribolayer properties with the tribological performance of clutch systems from different tests. One important finding was a non-zero threshold concentration of the additive elements calcium and phosphorous below which the clutch performance was unsatisfactory, even with a uniformly covered disk, concluding that the presence of some slightly higher additive element concentration seemed to stabilize the clutch performance. The importance of representative investigation area selection was demonstrated.

Authors with CRIS profile

Katharina Völkel Juniorprofessur für Maschinenelemente im Kontext der Elektromobilität

Involved external institutions

AC2T Research GmbH AT Austria (AT) Technische Universität München (TUM) DE Germany (DE) Magna International CA Canada (CA)

How to cite

APA:

Besser, C., Tomastik, C., Lebel, A., Baese, M., Wirkner, J., Strobl, P.,... Stahl, K. (2025). Effects of Additives Adsorbed to Wet Clutch Disks on Their Tribological Performance Found in a Comparative Investigation. Lubricants, 13(8). https://doi.org/10.3390/lubricants13080369

MLA:

Besser, Charlotte, et al. "Effects of Additives Adsorbed to Wet Clutch Disks on Their Tribological Performance Found in a Comparative Investigation." Lubricants 13.8 (2025).

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