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Nanostructural Aspects of Wear in Ion-Beam Deposited Pb-Mo-S Films

Published online by Cambridge University Press:  10 February 2011

D. N. Dunn ,
K. J. Wahl  and
I. L. Singer
D. N. Dunn
Affiliation:
Dept. of Materials Science and Engineering, University of Virginia, Charlottesville VA 22903
K. J. Wahl
Affiliation:
Naval Research Laboratory, Tribology Section, Washington, DC 20375
I. L. Singer
Affiliation:
Naval Research Laboratory, Tribology Section, Washington, DC 20375
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Abstract

Microstructural aspects of wear resistance have been investigated using cross-sectional transmission electron microscopy (TEM) to analyze both as-deposited and worn films. Asdeposited Pb-Mo-S films were virtually amorphous, i.e., show no long range structure. Wear tracks revealed a two-part wear process localized at the sliding surface. First, Pb-Mo-S at the sliding surface was transformed into basal-oriented, crystalline MoS2 from I to 4 monolayers thick. Then, as sliding continued, the MoS2 layers were detached one or two layers at a time. Evidence for the nanometer scale wear process is presented.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 522: Symposium T – Fundamentals of Nanoindentation & Nanotribology , 1998 , 451
Copyright
Copyright © Materials Research Society 1998

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