Effect of defects on wear behavior in ta-C coating prepared by filtered cathodic vacuum arc deposition

Woo Young Lee, Young Jun Jang, Takayuki Tokoroyama, Motoyuki Murashima, Noritsugu Umehara

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29 Citations (Scopus)

Abstract

This study examined the tribological behavior of a ta-C coating fabricated at a substrate bias of −100 V via filtered cathodic vacuum arc (FCVA) deposition. Defects in the ta-C coating were categorized as droplets, pores, and spikes, considering the morphological, structural, and mechanical properties of the ta-C surface. A friction test was conducted at 170 °C in ambient air using a ball-on-disk tribometer. The friction coefficient was 0.08 during the steady state and the wear rate was 4.3 × 10−6 mm3/Nm. To explain the friction and wear behavior, the morphological and structural properties of the defects in the designated area were compared among different sliding cycles.

Original languageEnglish
Article number107789
JournalDiamond and Related Materials
Volume105
DOIs
Publication statusPublished - 2020 May

Keywords

  • Defect
  • Filtered cathodic vacuum arc deposition
  • Tribological behavior
  • ta-C coating

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