Sliding wear of silicon carbide-titanium boride ceramic-matrix composite
- Argonne National Lab., IL (United States)
The tribological behavior of a SiC-TiB[sub 2] ceramic-matrix composite was evaluated using a pin-on-flat contact configuration in reciprocating sliding. A steady-state friction coefficient of about 0.55 and an average specific wear rate of about 2 x 10[sup [minus]6] mm[sup 3] [center dot] N[sup [minus]1] [center dot] m[sup [minus]1] were measured. The mechanisms of material removal involved failure of the particle-matrix interface, resulting in particle pullout and chipping of the matrix material. The generated wear debris was often recycled through the contact interface, resulting in the production of submicrometer fine particles that reattached to the surface and were later removed in flake form. Transitions were observed in the specific wear rate from higher to lower values as sliding progressed. These transitions were accompanied by transitions in the nominal contact pressure.
- OSTI ID:
- 6300413
- Journal Information:
- Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 76:2; ISSN 0002-7820; ISSN JACTAW
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360603* -- Materials-- Properties
BORIDES
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
COMPOSITE MATERIALS
FRACTURE PROPERTIES
FRICTION
LUBRICATING PROPERTIES
MATERIALS
MATRIX MATERIALS
MECHANICAL PROPERTIES
PHYSICAL PROPERTIES
SILICON CARBIDES
SILICON COMPOUNDS
SLIDING FRICTION
TITANIUM BORIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRIBOLOGY
WEAR