Accession Number:

ADA464847

Title:

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

Descriptive Note:

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

Report Date:

1998-01-01

Pagination or Media Count:

7.0

Abstract:

Microstructural aspects of wear resistance have been investigated using cross-sectional transmission electron microscopy TEM to analyze both as-deposited and worn films. As deposited 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 1 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.

Subject Categories:

  • Particle Accelerators

Distribution Statement:

APPROVED FOR PUBLIC RELEASE