Effect of defects on wear behavior in ta-C coating prepared by filtered cathodic vacuum arc deposition
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.
- Publication:
-
Diamond and Related Materials
- Pub Date:
- May 2020
- DOI:
- 10.1016/j.diamond.2020.107789
- Bibcode:
- 2020DRM...10507789L
- Keywords:
-
- ta-C coating;
- Defect;
- Filtered cathodic vacuum arc deposition;
- Tribological behavior