Nanoscale incipient asperity sliding and interface micro-slip assessed by the measurement of tangential contact stiffness

abstract

• Experiments with a multidimensional nano-contact system have shown that, prior to kinetic frictional sliding, there is a significant reduction of the tangential contact stiffness relative to the elastic prediction. The reduction occurs at contact sizes below about 50-200 nm for aluminum single crystals and several other materials. Using a cohesive interface model, we find that this reduction corresponds to a transition from a small-scale-slip to large-scale-slip condition of the interface. 2006 Acta Materialia Inc.

authors

• Pharr, George

published proceedings

• Scripta Materialia

author list (cited authors)

• Gao, Y. F., Lucas, B. N., Hay, J. C., Oliver, W. C., & Pharr, G. M.

citation count

• 29

complete list of authors

• Gao, YF||Lucas, BN||Hay, JC||Oliver, WC||Pharr, GM

publication date

• October 2006

publisher

• Elsevier  Publisher

published in

• Scripta Materialia  Journal

Digital Object Identifier (DOI)

• 10.1016/j.scriptamat.2006.05.006

start page

• 653

end page

• 656

volume

• 55

issue

• 7

URL

• http://dx.doi.org/10.1016/j.scriptamat.2006.05.006