NDLI: In-Contact IR Spectroscopy of Hydrocarbon Lubricants

Content Provider	Springer Nature Link
Author	Cann, P.M. Spikes, H.A.
Copyright Year	2005
Abstract	This paper reviews the application of infrared (IR) spectroscopy to in-contact lubrication studies, details improvements to the method and reports initial results from the study of a simple hydrocarbon fluid. IR spectra have been taken from the Hertzian region of a sliding contact lubricated by poly-α-olefin fluids. Single reflection sampling was used with a spot size of 100 μm square. The spectral range was limited to the CH stretch region of 3100--2700 cm$^{−1}$. The results show that it is possible to obtain good quality IR spectra from hydrocarbon films of less than 50 nm. Spectra sampled from the contact zone show peak intensity changes, frequency shifts and shape changes. Analysis of these results indicate that in the high pressure region there is an increase in gauche defects in the alkyl chain implying a more globular molecule with a lower volume but higher energy. In thin lubricant films (<100 nm) there is evidence of fluid structuring close to the metal surface.
Starting Page	289
Ending Page	297
Page Count	9
File Format	PDF
ISSN	10238883
Journal	Tribology Letters
Volume Number	19
Issue Number	4
e-ISSN	15732711
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2005-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	EHL lubrication FTIR spectroscopy lubricants Surfaces and Interfaces, Thin Films Physical Chemistry Tribology, Corrosion and Coatings Theoretical and Applied Mechanics
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Mechanics of Materials Mechanical Engineering Surfaces and Interfaces

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