Departmental Papers (MEAM)
Document Type
Journal Article
Date of this Version
6-11-2008
Abstract
The impressively low friction and wear of diamond in humid environments is debated to originate from either the stability of the passivated diamond surface or sliding-induced graphitization/rehybridization of carbon. We find ultralow friction and wear for ultrananocrystalline diamond surfaces even in dry environments, and observe negligible rehybridization except for a modest, submonolayer amount under the most severe conditions (high load, low humidity). This supports the passivation hypothesis, and establishes a new regime of exceptionally low friction and wear for diamond.
Date Posted: 19 January 2011
This document has been peer reviewed.
Comments
Suggested Citation:
A.R. Konicek, D.S. Grierson, P.U.P.A. Gilbert, W.G. Sawyer, A.V. Sumant, and R.W. Carpick. (2008). "Origin of Ultralow Friction and Wear in Ultrananocrystalline Diamond." Physical Review Letters. 100, 235502.
© 2008 The American Physical Society
http://dx.doi.org/10.1103/PhysRevLett.100.235502