Friction and wear properties of smooth diamond films grown in fullerene-argon plasmas

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In this study, we describe the growth mechanism and the ultralow friction and wear properties of smooth (20-50 nm rms) diamond films grown in a microwave plasma consisting of Ar and fullerene (the carbon source). The sliding friction coefficients of these films against Si{sub 3}N{sub 4} balls are 0.04 and 0.1 in dry N{sub 2} and air, which are comparable to that of natural diamond sliding against the same pin material, but is lower by factors of 5 to 10 than that afforded by rough diamond films grown in conventional H{sub 2}-CH{sub 4} plasmas. Furthermore, the smooth diamond films produced ... continued below

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30 p.

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Erdemir, A.; Fenske, G.R.; Bindal, C.; Zuiker, C.; Krauss, A.R. & Gruen, D.M. August 1, 1995.

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In this study, we describe the growth mechanism and the ultralow friction and wear properties of smooth (20-50 nm rms) diamond films grown in a microwave plasma consisting of Ar and fullerene (the carbon source). The sliding friction coefficients of these films against Si{sub 3}N{sub 4} balls are 0.04 and 0.1 in dry N{sub 2} and air, which are comparable to that of natural diamond sliding against the same pin material, but is lower by factors of 5 to 10 than that afforded by rough diamond films grown in conventional H{sub 2}-CH{sub 4} plasmas. Furthermore, the smooth diamond films produced in this work afforded wear rates to Si{sub 3}N{sub 4} balls that were two to three orders of magnitude lower than those of H{sub 2}-CH{sub 4} grown films. Mechanistically, the ultralow friction and wear properties of the fullerene-derived diamond films correlate well with their initially smooth surface finish and their ability to polish even further during sliding. The wear tracks reach an ultrasmooth (3-6 nm rms) surface finish that results in very little abrasion and ploughing. The nanocrystalline microstructure and exceptionally pure sp{sup 3} bonding in these smooth diamond films were verified by numerous surface and structure analytical methods, including x-ray diffraction, high-resolution AF-S, EELS, NEXAFS, SEM, and TEM. An AFM instrument was used to characterize the topography of the films and rubbing surfaces.

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30 p.

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OSTI as DE96002774

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  • 6. European conference on diamond, diamond-like and related materials, Barcelona (Spain), 10-15 Sep 1995

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  • Other: DE96002774
  • Report No.: ANL/ET/CP--87528
  • Report No.: CONF-9509137--1
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 146778
  • Archival Resource Key: ark:/67531/metadc624485

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  • August 1, 1995

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  • June 16, 2015, 7:43 a.m.

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  • Dec. 16, 2015, 12:32 p.m.

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Erdemir, A.; Fenske, G.R.; Bindal, C.; Zuiker, C.; Krauss, A.R. & Gruen, D.M. Friction and wear properties of smooth diamond films grown in fullerene-argon plasmas, article, August 1, 1995; Illinois. (digital.library.unt.edu/ark:/67531/metadc624485/: accessed November 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.