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    題名: Tribological properties of N+ ion implanted ultrananocrystalline diamond films
    作者: Kalpataru Panda;N. Kumar;B.K. Panigrahi;S.R. Polaki;B. Sundaravel;S. Dash;A.K. Tyagi;Lin, I-Nan
    貢獻者: 淡江大學物理學系
    關鍵詞: Ultra nanocrystalline diamond;Chemical structure;Tribological properties
    日期: 2013-01
    上傳時間: 2014-12-09 10:34:14 (UTC+8)
    出版者: Kidlington: Pergamon Press
    摘要: 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.
    關聯: Tribology International 57, pp.124–136
    DOI: 10.1016/j.triboint.2012.07.016
    顯示於類別:[物理學系暨研究所] 期刊論文

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