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 00:00:00 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
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

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