Ion-beam-assisted deposition of silver films on zirconia ceramics for improved tribological behavior

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:6951266

Erdemir, A; Busch, D E; Erck, R A; Fenske, G R; Lee, R

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., IL (USA)
• Sponsoring Organization: DOE/CE
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6951266
• Report Number(s): CONF-901071-3; ON: DE90009706
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ALKALINE EARTH METAL COMPOUNDS
BEAMS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CERAMICS
CHALCOGENIDES
CHEMICAL ANALYSIS
COATINGS
CRACKS
DEPOSITION
ELECTRON MICROSCOPY
ELEMENTS
FRACTURE MECHANICS
FRICTION
FUNCTIONS
HARDNESS
INTERFACES
ION BEAMS
LASERS
MEASURING METHODS
MECHANICAL PROPERTIES
MECHANICS
MELTING
METALS
MICROSCOPY
MITIGATION
MORPHOLOGY
OPTIMIZATION
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RAMAN SPECTRA
SCATTERING
SILVER
SPECTRA
STABILITY
STRENGTH FUNCTIONS
STRESSES
STRUCTURAL MODELS
SURFACE PROPERTIES
TEMPERATURE GRADIENTS
TENSILE PROPERTIES
TESTING
THERMAL CONDUCTIVITY
THERMAL INSULATION
THERMAL STRESSES
THERMODYNAMIC PROPERTIES
THERMODYNAMICS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TRIBOLOGY
VELOCITY
WEAR
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES