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Coordinated test‐rig and ToF‐SIMS experiments to investigate the influence of phosphate glass layers on the friction behavior of a wet clutch
Author(s) -
Mayer C.,
Lipinsky D.,
Wohlleber F.,
Pflaum H.,
Stahl K.,
Arlinghaus H. F.
Publication year - 2014
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.5610
Subject(s) - secondary ion mass spectrometry , tribology , clutch , base oil , phosphate , materials science , layer (electronics) , composite material , boundary layer , chemical engineering , chemistry , mass spectrometry , scanning electron microscope , mechanical engineering , chromatography , thermodynamics , organic chemistry , physics , engineering
The structure and chemical composition of boundary layers built under tribological stress impact the friction and wear of solid‐state surfaces in a major way. Time‐of‐flight secondary ion mass spectrometry is ideally suited for the analysis of these boundary layers, including the adsorptive layer formed from oil additive components, and to advance the understanding of the interaction of all materials involved. Tribologically formed phosphate glass layers on friction body surfaces of standard wet multi‐disc clutches, which had been exposed to defined loads in an environment of different model fluids of polyalphaolefin base oil blended with different single additives or well‐defined mixtures of two additives, were investigated using time‐of‐flight secondary ion mass spectrometry. The obtained data give an insight on how additive‐based reaction layers on friction surfaces may affect the friction curve of a wet clutch. Copyright © 2014 John Wiley & Sons, Ltd.