Observations on the sliding wear of ceramics

Conference · Sun Jan 01 04:00:00 UTC 1984

OSTI ID:7063613

Yust, C S; Carignan, F J

Modern design concepts for heat engines with increased thermal efficiency call for the utilization of ceramic components. In some applications, lubrication of these components will be difficult to maintain. Consequently, a need exists for an expanded understanding of the dry sliding wear behavior of ceramics. Sliding wear experiments were performed on several ceramic pairs (ZrO/sub 2/, Al/sub 2/O/sub 3/, Si/sub 3/N/sub 4/, SiC) from which wear rate data and information on the nature of the physical damage resulting from dry sliding were obtained. The wear evaluation was a pin-on-disc test. The test conditions included temperatures as high as 425/sup 0/C, a surface velocity of 0.3 m/s, and a normal force of 9.0 N. Most of the specimens experienced moderate to severe damage. Damage characterized as mild wear was observed in a single room temperature test. The coefficient of friction for the damaged specimens ranged from 0.7 to 1.0, while this value was consistently 0.24 for the undamaged specimen. The implications of these results for wear mechanisms are discussed.

• Research Organization: Oak Ridge National Lab., TN (USA); Advanced Mechanical Technology, Inc., Newton, MA (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 7063613
• Report Number(s): CONF-8405176-1; ON: DE84012344
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
DAMAGE
ENGINES
HEAT ENGINES
HIGH TEMPERATURE
MEDIUM TEMPERATURE
NITRIDES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PNICTIDES
SILICON CARBIDES
SILICON COMPOUNDS
SILICON NITRIDES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
WEAR
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES