Journal
APPLIED PHYSICS LETTERS
Volume 91, Issue 16, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2800375
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The velocity dependence of nanoscale wear is studied over a wide range of velocities up to 100 mm/s. High sliding velocities are achieved by modifying an existing setup with a custom calibrated piezostage. Pt-coated atomic force microscope probes are scanned against uncoated diamondlike carbon-coated Si wafers and with an overcoat of a lubricant film. The wear rate increases with logarithm of velocity up to a certain value and then levels off. A wear model is developed to explain the velocity dependence of nanoscale wear based on thermally activated atomic-scale stick slip and tribochemical wear. (C) 2007 American Institute of Physics.
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