Effects of high-temperature hydrogenation treatment on sliding friction and wear behavior of carbide-derived carbon films.

Conference · Thu Jan 01 04:00:00 EST 2004 · Surf. Coat. Technol.

DOI:https://doi.org/10.1016/j.surfcoat.2004.07.052· OSTI ID:947959

Erdemir, A; Kovalchenko, A; McNallan, M J; Welz, S; Lee, A; Gogotsi, Y; Carroll, B

In this study, we investigated the effects of a high-temperature hydrogenation treatment on the sliding friction and wear behavior of nanostructured carbide-derived carbon (CDC) films in dry nitrogen and humid air environments. These films are produced on the surfaces of silicon carbide substrates by reacting the carbide phase with chlorine or chlorine-hydrogen gas mixtures at 1000 to 1100 C in a sealed tube furnace. The typical friction coefficients of CDC films in open air are in the range of 0.2 to 0.25, but in dry nitrogen, the friction coefficients are 0.15. In an effort to achieve lower friction on CDC films, we developed and used a special hydrogenation process that was proven to be very effective in lowering friction of CDC films produced on SiC substrates. Specifically, the films that were post-hydrogen-treated exhibited friction coefficients as low as 0.03 in dry nitrogen, while the friction coefficients in humid air were 0.2. The wear of Si{sub 3}N{sub 4} counterface balls was hard to measure after the tests, while shallow wear tracks had formed on CDC films on SiC disks. Detailed mechanical and structural characterizations of the CDC films and sliding contact surfaces were done using a series of analytical techniques and these findings were correlated with the friction and wear behaviors of as-produced and hydrogen-treated CDC films.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: EE
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 947959
• Report Number(s): ANL/ET/CP-113828
• Conference Information: Journal Name: Surf. Coat. Technol. Journal Issue: 2004 Journal Volume: 188-189
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

36 MATERIALS SCIENCE
CARBON
HYDROGENATION
MECHANICAL TESTS
SILICON CARBIDES
SLIDING FRICTION
SUBSTRATES
THIN FILMS
WEAR RESISTANCE