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AssigneeUchicago Argonne, LLC
InventorsOyelayo O. Ajayi, Jeffrey G. Hershberger
Estimating the term…
An improved process for the creation or formation of nanocrystalline layers on substrates' surfaces is provided. The process involves “prescuffing” the surface of a substrate such as a metal by allowing friction to occur on the surface by a load-bearing entity making rubbing contact and moving along and on the substrate's surface. The “prescuffing” action is terminated when the coefficient of friction between the surface and the noise is rising significantly. Often, the significant rise in the coefficient of friction is signaled by a change in pitch of the scuffing action sound emanating from the buffeted surface. The “prescuffing” gives rise to a harder and smoother surface which withstands better any inadequate lubrication that may take place when the “prescuffed” surface is contacted by other surfaces.
A process for creating a graded nano crystalline layer on a surface of a metallic substrate, the process comprising subjecting the substrate's surface to controlled rubbing contact conditions until the crystalline layer has greater grain size with greater depth into the substrate, wherein the crystalline layer is created by reduction of the substrate's surface grain size with resulting grain sizes of from about 20 nanometers (nm) to 40 nanometers.
A method for creating a graded scuff-resistant surface, the method comprising:
Dependencies are inferred from the claim text.