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Deposition of Diamond-Like Carbon Films Using Hollow Cathode Plasma Source

  • H. F. Jiang
  • , X. B. Tian*
  • , S. Q. Yang
  • , R. K. Y. Fu
  • , Paul K. Chu*
  • *Corresponding author for this work

    Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

    Abstract

    Diamond-like carbon (DLC) films are deposited on AISI 304 stainless steel substrates using hollow cathode chemical vapor deposition (CVD). The substrate bias voltage is varied from 0 to -200 V to investigate its effect on the structural and mechanical properties of the films. Raman spectra show the formation of the G (graphite) peak and D (disorder) peak in the films. X-ray photoelectron spectroscopy (XPS) data also confirm the existence of C=C (sp2) and C-C (sp3) bonds. Our experiments show that the sample bias has a critical influence on the thickness and hardness of the deposited films. The largest thickness (1700 nm) and the highest hardness (HV1099) are achieved at a bias voltage of -50 V. All the films show low friction coefficients and the sample treated at -200 V exhibits the lowest friction coefficient. The enhancement mechanism is also described.
    Original languageEnglish
    Title of host publicationProceedings of the 35th IEEE International Conference on Plasma Science (ICOPS 2008)
    Pages179
    DOIs
    Publication statusPublished - 15 Jun 2008
    Event35th IEEE International Conference on Plasma Science (ICOPS 2008) - Karlsruhe, Germany
    Duration: 15 Jun 200819 Jun 2008

    Conference

    Conference35th IEEE International Conference on Plasma Science (ICOPS 2008)
    PlaceGermany
    CityKarlsruhe
    Period15/06/0819/06/08

    Research Keywords

    • Diamond-like carbon

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