Tribological Behavior of Silver Films Prepared on Ceramic Surfaces by Ion-Beam-Assisted Deposition

Conference · Mon Sep 02 00:00:00 EDT 1991

OSTI ID:5481119

Erdemir, A. ^[1]; Erck, R. A. ^[1]; Ajayi, O. O. ^[1]; Hsieh, J. H. ^[1]; Cheng, C. C. ^[2]; Nichols, F. A. ^[1]

---

1. Argonne National Laboratory (ANL), Argonne, IL (United States)
2. Argonne National Laboratory (ANL), Argonne, IL (United States); Inland Steel Company, East Chicago, IN (United States)

This study was undertaken to achieve low friction and low wear on ceramic materials by using adherent silver films prepared by ion-beam-assisted deposition (IBAD). In this deposition technique, low-energy ions are used to bombard the substrates and films before and during deposition to achieve better film-to-substrate adhesion, which is essential for improved tribological behavior. Cross-sectional transmission electron microscopy (XTEM) was used to investigate the grain morphology and the nucleation and growth characteristics of IBAD-silver films at film-substrate interfaces. A ball-on-disk tribometer was used to evaluate the friction and wear properties of the silver-coated ceramics. The XTEM studies indicated that the films exhibited an equiaxed grain structure with grain sizes ranging from 5 to 10 nm. Gaps and/or discontinuity were not detected at the interfaces, indicating that the silver films bond intimately to the alumina substrates. Tribological test results indicated that the wear of disks coated with IBAD-silver was unmeasurably low; wear of alumina balls was by factors of 10 to 50 lower than the wear of balls sliding against uncoated disks. The friction coefficient was one-half to one-third that of sliding pairs without IBAD-silver films.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Materials & Manufacturing Technologies Office (AMMTO)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5481119
• Report Number(s): ANL/CP-72519; CONF-9109243--1; ON: DE91017306
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BEAMS
CHALCOGENIDES
COATINGS
DEPOSITION
ELECTRON MICROSCOPY
ELEMENTS
FILMS
FRICTION
INTERFACES
ION BEAMS
METALS
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
SILVER
SUBSTRATES
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TRANSMISSION ELECTRON MICROSCOPY
TRIBOLOGY
WEAR
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES