Sliding wear of Al{sub 2}O{sub 3}-SiC-(Al,Si) composites against a steel counterface

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1151-2916.1997.tb02813.x· OSTI ID:455173

Ravikiran, A; Jayaram, V; Biswas, S K ^[1]

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1. Indian Inst. of Science, Bangalore (India)

The sliding-wear behavior of Al{sub 2}O{sub 3}-SiC-Al composites prepared by melt oxidation against a steel counterface has been recorded in a pin-on-disk machine. At high speeds and pressures (10 m/s, 20 MPa), friction and wear appear to be principally controlled by the in-situ formation of an interfacial film that consists of a layer of Fe{sub 3}O{sub 4}. The formation of this film is examined as a function of sliding speed, lubrication, and composite microstructure. A model is proposed in which high surface temperatures cause the preferential extrusion of aluminum from the composite onto the pin/disk interface. This promotes the adhesive pickup of iron and its oxidation to form a stable tribologically beneficial layer of Fe{sub 3}O{sub 4}.

• Sponsoring Organization: USDOE
• OSTI ID: 455173
• Journal Information: Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 1 Vol. 80; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
ALUMINIUM OXIDES
COMPOSITE MATERIALS
EXPERIMENTAL DATA
INTERFACES
IRON OXIDES
MATHEMATICAL MODELS
SILICON ALLOYS
SLIDING FRICTION
STEELS
WEAR RESISTANCE
ZINC ALLOYS