Fundamental tribological properties of ceramics

Conference · Thu Aug 01 04:00:00 EDT 1985 · Ceram. Eng. Sci. Proc.; (United States)

OSTI ID:5700189

Buckley, D H; Miyoshi, K

When a ceramic is brought into contact with itself, another ceramic, or a metal, strong bond forces can develop between the materials. Adhesion between a ceramic and itself or another solid are discussed from a theoretical consideration of the nature of the surfaces and experimentally by relating bond forces to the interface resulting from solid state contact. Elastic, plastic, and fracture behavior of ceramics in solid-state contact are discussed as they relate to friction and wear. The contact load necessary to initiate fracture in ceramics is shown to be appreciably reduced with tangential motion. Both friction and wear of ceramics are anisotropic and relate to crystal structure as with metals. Both free energy of oxide formation and the d valence bond character of metals are related to the friction and wear characteristics for metals in contact with ceramics. Lubrication is found to increase the critical load necessary to initiate fracture of ceramics with sliding or rubbing contact. 20 references.

• Research Organization: NASA, Lewis Research Center, Cleveland, OH
• OSTI ID: 5700189
• Report Number(s): CONF-850122-
• Conference Information: Journal Name: Ceram. Eng. Sci. Proc.; (United States) Journal Volume: 6
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ADHESION
ANISOTROPY
CARBIDES
CARBON COMPOUNDS
CERAMICS
CRYSTAL STRUCTURE
CRYSTALLOGRAPHY
ELECTRON MICROSCOPY
FERRIMAGNETIC MATERIALS
FERRITES
FRACTURE MECHANICS
FRICTION
IRON COMPOUNDS
LUBRICATION
MAGNETIC MATERIALS
MATERIALS
MECHANICS
MICROSCOPY
OXYGEN COMPOUNDS
SILICON CARBIDES
SILICON COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WEAR