Chemical and Mechanical Properties of ZDDP Antiwear Films on Steel and Thermal Spray Coatings Studied by XANES Spectroscopy and Nanoindentation Techniques
作者： Mark A. Nicholls , Than Do , Peter R. Norton , G. Michael Bancroft , Masoud Kasrai
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摘要: X-ray Absorption Near Edge Structure (XANES) has been used to characterize the chemistry of tribochemical wear pads generated from a paraffinic base oil with zinc-dialkyl-dithiophosphate additive on steel surfaces and high-velocity oxygen fuel (HVOF) thermal spray coatings. The phosphorus K- L- edge XANES spectra show that tribofilms formed HVOF coatings have same chemical nature. Also, mechanical properties these were examined by nanoindentation techniques using both Hysitron Interfacial Force Microscopy (IFM) instruments. elastic moduli extracted indentation force-displacement (f-d) curves demonstrated similar surface topography properties.
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