Characterization Of Annealed Pulsed Laser Deposited (PLD) Thin Films of Cesium Oxythiomolybdate (Cs2MoOS3)

Abstract

Cesium oxythiomolybdate (Cs2MoOS3) is under consideration as a high temperature solid lubricant for silicon nitride bearings. However, Cs2MoOS3oxidizes below the proposed maximum use temperature of 800 ˚C, and the oxidation process is complex. In the presence of silicon nitride, the oxidation reactions change. The purpose of the present research was to determine the chemistry of Cs2MoOS3 coatings grown by pulsed laser deposition (PLD) on several substrates (Si3N4, SiC, Inconel, Al2O3 and ZrO2), and to determine the changes in chemistry and crystal structure after annealing in air to temperatures up to 800 ˚C. Many of the oxidation products identified are expected to be lubricious at elevated temperatures.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2002
Accession Number
ADA424236

Entities

People

  • Jeffrey S. Zabinski
  • Karla L. Storng

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force Research Laboratories
  • Ceramic Materials
  • Chemical Synthesis
  • Chemistry
  • Crystal Structure
  • Electron Microscopy
  • Lasers
  • Lubricants
  • Materials
  • Oxidation
  • Oxides
  • Pulsed Lasers
  • Solid Lubricants
  • Spectra
  • Spectroscopy
  • Thin Films
  • X Rays

Readers

  • Thin Film Deposition Science.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Directed Energy - Pulsed-Laser Deposition