Synthesis of diamondlike carbon films with superlow friction and wear properties

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In this study, the authors introduce a new diamondlike carbon (DLC) film providing a friction coefficient of 0.001 and wear rates of 10{sup {minus}9} to 10{sup {minus}10} mm{sup 3}/N.m in inert-gas environments (e.g., dry nitrogen and argon). The film was grown on steel and sapphire substrates in a plasma enhanced chemical vapor deposition system that uses using a hydrogen-rich plasma. Employing a combination of surface and structure analytical techniques, they explored the structural chemistry of the resultant DLC films and correlated these findings with the friction and wear mechanisms of the films. The results of tribological tests under a 10-N ... continued below

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23 p.

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Erdemir, A.; Eryilmaz, O. L. & Fenske, G. January 19, 2000.

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Description

In this study, the authors introduce a new diamondlike carbon (DLC) film providing a friction coefficient of 0.001 and wear rates of 10{sup {minus}9} to 10{sup {minus}10} mm{sup 3}/N.m in inert-gas environments (e.g., dry nitrogen and argon). The film was grown on steel and sapphire substrates in a plasma enhanced chemical vapor deposition system that uses using a hydrogen-rich plasma. Employing a combination of surface and structure analytical techniques, they explored the structural chemistry of the resultant DLC films and correlated these findings with the friction and wear mechanisms of the films. The results of tribological tests under a 10-N load (creating initial peak Hertz pressures of 1 and 2.2 GPa on steel and sapphire test pairs, respectively) and at 0.2 to 0.5 m/s sliding velocities indicated that a close correlation exists between the friction and wear coefficients of DLC films and the source gas chemistry. Specifically, films grown in source gases with higher hydrogen-to-carbon ratios had the lowest fiction coefficients and the highest wear resistance. The lowest friction coefficient (0.001) was achieved with a film on sapphire substrates produced in a gas discharge plasma consisting of 25% methane and 75% hydrogen.

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23 p.

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OSTI as DE00751888

Medium: P; Size: 23 pages

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  • 46th International Symposium of the American Vacuum Society, Seattle, WA (US), 10/25/1999--10/29/1999

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  • Report No.: ANL/ET/CP-100930
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 751888
  • Archival Resource Key: ark:/67531/metadc702832

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • January 19, 2000

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 10, 2017, 3:58 p.m.

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Erdemir, A.; Eryilmaz, O. L. & Fenske, G. Synthesis of diamondlike carbon films with superlow friction and wear properties, article, January 19, 2000; Illinois. (digital.library.unt.edu/ark:/67531/metadc702832/: accessed December 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.