Abstract
An atomic force microscope (AFM), a surface forces apparatus (SFA), and a ball-on- inclined plane (BOIP) apparatus were used to measure the mechanical properties of thin lubricant films. The frictional force of a set of four samples with different lubricant chemistries was measured by an AFM using a conventional sharp silicon nitride tip. Very little difference was observed among the different chemistries. A careful study using different tip sizes on two model compounds on mica was compared to results obtained with the SFA and suggested a tip size effect (scaling issue).
A systematic test protocol was then developed to measure the adhesive strength and durability of films on nanometer and larger scales. A one pass ball-on-inclined plane test was used to measure the adhesive strength of various chemical films. A high speed version of the ball-on-inclined plane was then used to measure the durability of these films. Successful measurements depend on controlling the relative surface roughness down to the nanometer scale even though the test itself is at the mm scale.
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© 2001 Springer Science+Business Media Dordrecht
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Hsu, S.M. et al. (2001). Scaling Issues in the Measurement of Monolayer Films. In: Bhushan, B. (eds) Fundamentals of Tribology and Bridging the Gap Between the Macro- and Micro/Nanoscales. NATO Science Series, vol 10. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0736-8_51
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DOI: https://doi.org/10.1007/978-94-010-0736-8_51
Publisher Name: Springer, Dordrecht
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