Nanomechanical properties of films derived from zinc dialkyldithiophosphate
作者： O.L. Warren , J.F. Graham , P.R. Norton , J.E. Houston , T.A. Michalske
关键词: Materials science 、 Microscope 、 Atomic force microscopy 、 Interfacial Force 、 Oil additive 、 Immersion (virtual reality) 、 Zinc 、 Nanotechnology 、 Nanoindentation 、 Composite material 、 Shear stress
摘要: We have applied scanning force microscopes to the problem of determining nanomechanical properties and topography films derived from antioxidant/antiwear oil additive zincdialkyldithiophosphate (ZDDP). The enhanced capabilities interfacial microscope (IFM) are exploited obtain quantitative force-displacement data pre- post-indent images, atomic (AFM) enables us survey up much larger spatial dimensions. A film which has been generated by static immersion a steel coupon in heated ZDDP/oil solution displays nano indentation response similar that lightly loaded regions prepared conventional wear testing using same starting materials. More interestingly, highly specimen exhibit different response, signals presence at least two material an amazing capacity tode form predominantly elastic mode, is sharp contrast with elastic-plastic regions, immersion. Our results notin consistent possibility friction-induced glass as proper description for specimen.
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