Ion-beam-assisted deposition of silver films on zirconia ceramics for improved tribological behavior
Silver coatings of 2 {mu}m nominal thickness were deposited on toughened zirconia ceramics by ion-beam-assisted deposition (IBAD). Tribotests were performed with ball-on-disk machines under a load of 5 N, at velocities of 0.1 to 2 m.s{sup {minus}1}, and in dry and normal air. The sliding friction coefficients of zirconia on itself ranged from 0.3 to 1.2, and the wear rates spanned more than three orders of magnitude, depending on the sliding velocity. In contrast, the wear of IBAD-silver-coated disks was practically unmeasurable, and the wear of zirconia balls was reduced by factors of 5 to 1200 below that of balls slid against uncoated zirconia disks. Large reductions in friction coefficients were also observed for the pairs that included an IBAD-silver film. Scanning-electron microscopy and laser-Raman spectroscopy were used to elucidate the mechanisms of wear of coated and uncoated ceramics. 28 refs., 11 figs., 2 tabs.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- DOE/CE
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6951266
- Report Number(s):
- CONF-901071-3; ON: DE90009706
- Resource Relation:
- Conference: Joint STLE-ASME tribology conference, Toronto (Canada), 7-10 Oct 1990
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CERAMICS
PERFORMANCE TESTING
FRICTION
MITIGATION
ION BEAMS
DEPOSITION
SILVER
COATINGS
ZIRCONIUM OXIDES
TRIBOLOGY
CALCIUM OXIDES
CHEMICAL ANALYSIS
CRACKS
ELECTRON MICROSCOPY
FRACTURE MECHANICS
HARDNESS
INTERFACES
LASERS
MEASURING METHODS
MELTING
MORPHOLOGY
OPTIMIZATION
RAMAN SPECTRA
SCATTERING
STABILITY
STRENGTH FUNCTIONS
STRUCTURAL MODELS
SURFACE PROPERTIES
TEMPERATURE GRADIENTS
TENSILE PROPERTIES
THERMAL CONDUCTIVITY
THERMAL INSULATION
THERMAL STRESSES
THERMODYNAMICS
VELOCITY
WEAR
ALKALINE EARTH METAL COMPOUNDS
BEAMS
CALCIUM COMPOUNDS
CHALCOGENIDES
ELEMENTS
FUNCTIONS
MECHANICAL PROPERTIES
MECHANICS
METALS
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SPECTRA
STRESSES
TESTING
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
ZIRCONIUM COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies
360203 - Ceramics
Cermets
& Refractories- Mechanical Properties