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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/97204

    Title: Tribological properties of N+ ion implanted ultrananocrystalline diamond films
    Authors: Panda, Kalpataru;Kumar, N.;Panigrahi, B. K.;Polaki, S. R.;Sundaravel, B.;Dash, S.;Tyagi, A. K.;Lin, I-Nan
    Contributors: 淡江大學物理學系
    Keywords: Ultra nanocrystalline diamond;Chemical structure;Tribological properties
    Date: 2013-01
    Issue Date: 2014-03-18 10:05:42 (UTC+8)
    Publisher: Kidlington: Pergamon
    Abstract: Tribological properties of ultra nanocrystalline diamond (UNCD) films have chemically been modified by N+ ion implantation and subsequent annealing processes. Friction coefficient is found to be 0.15 in as-prepared film comparing to 0.09 and 0.05 in N+ ion implanted and post-annealed films, respectively. Such a modification of friction coefficient is a characteristic of the transformation of sp3 to graphitized/amorphized sp2 bonded carbon network. Transformation of sp3 to sp2 carbon network causes conversion of higher surface energy state (hydrophilic) to lower (hydrophobic) one which results in ultra low friction coefficient. Graphitization/amorphization in wear track observed by micro Raman spectroscopy is found to be the prominent mechanism for the reduction in friction coefficient.
    Relation: Tribology International 57, pp.124–136
    DOI: 10.1016/j.triboint.2012.07.016
    Appears in Collections:[Graduate Institute & Department of Physics] Journal Article

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