Investigation of tribological system surfaces of high-speed rolling element bearings by AES, XPS and SIMS

verfasst von

Ullrich Gunst, Jérôme Guillot, Nathalie Valle, Wolf Rüdiger Zabel, Henri Noël Migeon, Gerhard Poll, Heinrich Franz Arlinghaus

Abstract

The compositions of boundary layers were studied within the elastohydrodynamic contact regions of tribological tested high-speed rolling element bearings. The tribological tests were performed with 6 different model lubricants (lithium soap greases). In 5 cases, primary antioxidants were added to the composition of a base lubricant to study their influence on the tribological system used. The grease service lives of 3 model lubricants showed unexpected high values and compared favorably with those of commercial standard lithium soap greases although only one additive type was used to improve the lubricant properties. The composition of the boundary layers in the raceway was influenced by the lubricant additive formulation used in the tribological tests. Low ⁵⁶Fe⁺/C₄H₈ ⁺ ratios, low Fe/C ratios and high values of adsorbed and incorporated lubricant portions correlated with high lubricant service lives, whereas high oxygen incorporation was correlated to low lubricant service lives. This is an abstract of a paper presented at the Proceedings of World Tribology Conference (Kyoto, Japan 9/6-11/2009).

Organisationseinheit(en)

Institut für Maschinenkonstruktion und Tribologie

Externe Organisation(en)

Westfälische Wilhelms-Universität Münster (WWU)
Centre de Recherche Public – Gabriel Lippmann Informatics, Systems and Collaboration (ISC)
Schaeffler Technologies AG & Co. KG

Typ

Aufsatz in Konferenzband

Seiten

816

Anzahl der Seiten

1

Publikationsdatum

2009

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Prozesschemie und -technologie, Maschinenbau