Accession Number:

ADA359986

Title:

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

Descriptive Note:

Final rept. 1 Sep 97-31 Aug 98

Corporate Author:

TECHNOLOGY ASSESSMENT AND TRANSFER INC ANNAPOLIS MD

Report Date:

1998-12-01

Pagination or Media Count:

23.0

Abstract:

Wide temperature, solid lubricant films offer payoffs for military turbomachinery components rub seals, face seals, fretting interfaces and bearings. Multilayer films of B4CMo, B4CCr, ZnW, NiTi, AuCr, WMoS 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 ZnW and WMoS2 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.

Subject Categories:

  • Coatings, Colorants and Finishes
  • Lubricants and Hydraulic Fluids

Distribution Statement:

APPROVED FOR PUBLIC RELEASE