Ion Beam Deposited Metal Oxide and Fluoride Composite Coatings for High Temperature Tribological Applications

Abstract

Wide temperature, solid lubricant films offer payoffs for military turbomachinery components: rub seals, face seals, fretting interfaces and bearings. Multilayer films of B4C/Mo, B4C/Cr, Zn/W, Ni/Ti, Au/Cr, W/MoS and AlCuFeCr films were deposited by planar magnetron sputtering or ion bombardment assisted deposition (IBAD), and evaluated for adhesion, friction and wear properties from room temperature to as high as 1100 deg F. Oxidized Zn/W and W/MoS2 films exhibited low friction coefficients at room temperature. However, only AlFeCuCr quasicrystalline films consistently produced low friction coefficients at high temperature, suggesting that these films warrant further investigation. High friction coefficients obtained with IBAD Ni-Ti films at 1100 deg F were especially puzzling given previous Southwest Research Institute results that showed low friction values at high temperature.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1998
Accession Number
ADA359986

Entities

People

  • James H. Arps
  • Larry L. Fehrenbacher

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Bearings
  • Coefficients
  • Composite Materials
  • Crystal Structure
  • Films
  • Friction
  • Gas Turbines
  • High Temperature
  • Ion Beams
  • Ion Bombardment
  • Ions
  • Lubricants
  • Materials
  • Metal Oxides
  • Oxides
  • Solid Lubricants
  • Turbines

Fields of Study

  • Materials science

Readers

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