The joint effect of surface microtopography and near-surface structure on microcontact conditions: Progress report for period June--August 1988

Technical Report · Tue Nov 01 04:00:00 EST 1988

OSTI ID:6419546

McCool, J I; Bunting, B G

A data base of roughness measurements has been compiled for the ceramic test specimens to be wear tested in this program. The computation of the equivalent isotropic RMS profile slope is discussed and numerical values are given. Wear tests performed on AlO, SiN, and SiC at ORNL show significant differences in wear coefficient due to both material and finish. Acoustic emission readings reflective of variations in the porosity and/or elastic modulus at near surface layers were performed on three differently finished silicon nitride flats, at the Argonne National Laboratory. The within specimen variability is believed to indicate real differences from location to location within a specimen. There is no apparent difference between specimens. An alternative procedure for characterizing variations in elastic modulus using a nanoindenter is discussed. 4 refs., 4 tabs.

• Research Organization: MRC Bearings, Jamestown, NY (USA)
• DOE Contract Number: AC02-87CE90001
• OSTI ID: 6419546
• Report Number(s): DOE/CE/90001-2; ON: DE89008515
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
42 ENGINEERING
420500 -- Engineering-- Materials Testing
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBIDES
CARBON COMPOUNDS
CERAMICS
CHALCOGENIDES
DATA
DOCUMENT TYPES
FRICTION
INFORMATION
MATERIALS TESTING
MATHEMATICS
NITRIDES
NITROGEN COMPOUNDS
NUMERICAL ANALYSIS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PNICTIDES
PROGRESS REPORT
SILICON CARBIDES
SILICON COMPOUNDS
SILICON NITRIDES
SLIDING FRICTION
SURFACE FINISHING
SURFACES
TESTING
TRIBOLOGY
WEAR