Tribological properties of carbon coatings produced by high temperature chlorination of silicon carbide.

Journal Article · Sat Jan 01 00:00:00 EST 2000 · Tribology Trans.

DOI:https://doi.org/10.1080/10402000008982412· OSTI ID:961057

Ersoy, D A; McNallan, M J; Gogotsi, Y; Erdemir, A

The tribological properties of highly disordered graphitic carbon layers formed on silicon carbide (SiC) substrates by reaction with chlorine and chlorine-hydrogen gas mixtures at 1000 {sup o}C were studied. Si was selectively removed from the near surface of SiC by chlorine gas, leaving behind a layer of carbon having high structural density and strong bonding characteristics. Tribological tests showed that the carbon films were highly adherent and able to reduce friction coefficients of the base SiC by factors of up to seven. There was little or no change in the factional behavior of carbon layers when sliding velocity and load were increased. Low friction coefficients (-0.1) could be obtained under wet, dry, polished, and rough conditions. The initially rough carbon surface underwent plastic flow producing a smooth, self-adjusting carbon layer. Structural morphology and the amount of disorder in the carbon layers were correlated with the friction and wear performance of the resultant films.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: National Science Foundation (NSF)
• DOE Contract Number: DE-AC02-06CH11357
• OSTI ID: 961057
• Report Number(s): ANL/ET/JA-44225; TRN: US201010%%887
• Journal Information: Tribology Trans., Vol. 43, Issue 4 ; 2000
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
BONDING
CARBON
CHLORINATION
CHLORINE
COATINGS
DENSITY
FILMS
FRICTION
LAYERS
MIXTURES
MORPHOLOGY
PERFORMANCE
RAMAN SPECTROSCOPY
SILICON
SILICON CARBIDES
SOLID LUBRICANTS
SUBSTRATES
SURFACES
TEMPERATURE RANGE 0400-1000 K
TRIBOLOGY
VELOCITY
WEAR