Friction and wear of whisker-reinforced ceramic composite bodies

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

OSTI ID:7143569

Yust, C S

An overview of the wear behavior of such a recent material development as whisker-reinforced ceramics will necessarily depend on limited sources. In fact, the literature contains very few references to wear studies in materials of this type. Whisker composites are an emerging material and it could hardly be expected that their behavior would be well characterized at this time, particularly with regard to wear behavior. Results of whisker composite wear studies which have been performed at ORNL have been summarized, as have relevant published data. The results presented in this paper, however, do more to indicate the need for additional work than to offer a complete body of knowledge. The results contained within this proceedings may prove to be one of the most concentrated collections of information to date on this topic. A conclusion which may be drawn by this overview is that wear behavior in whisker-reinforced ceramics can be complex and requires careful examination. The results indicate that the increased strength and fracture toughness produced by the inclusion of whiskers in ceramics may be offset by the introduction of phase interfaces subject to the action of dynamic stress states. Examples have been presented in this paper of the well-known transition from mild to severe wear which is so characteristic not only of the wear of ceramics but of other materials, as well. Most ceramic wear testing to date indicates that unlubricated use of ceramics as machine components is not likely to be successful, except under very mild contact conditions.

• Research Organization: Oak Ridge National Lab., TN (USA)
• Sponsoring Organization: DOE/CE
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 7143569
• Report Number(s): CONF-9004201-1; ON: DE90011313
• 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
360603 -- Materials-- Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
COMPOSITE MATERIALS
CRYSTALS
FRICTION
MATERIALS
MONOCRYSTALS
NITRIDES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PNICTIDES
REINFORCED MATERIALS
SILICON CARBIDES
SILICON COMPOUNDS
SILICON NITRIDES
SURFACES
TRANSITION ELEMENT COMPOUNDS
WEAR
WHISKERS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES