Greenhouse gas emissions and air pollution are major environmental issues. Reducing friction losses in mechanical parts to maximize energy efficiency is essential. DLC coatings have gained attention as solid lubricants in unsuitable environments, but they suffer from oxidation and wear at high temperatures. To improve oxidation resistance, this study explores the use of 1-dimensional materials, specifically Carbon Nanotubes (CNTs). CNTs were expected to synthesize on ta-C coatings through dip-coating with Co and Mo nanoparticles, followed by CVD treatment at 800°C with and without ethanol. Raman spectroscopy, ESR, and Thermogravimetric Analysis (TG-DTA) were used to evaluate structural changes and the effects of dangling bond density on oxidation. The results showed that CVD-treated ta-C coatings with CNTs had the lowest dangling bond density (1.96×10¹⁹ /cm³), minimal weight loss (49.2 μg), and the least oxygen bonding, indicating enhanced oxidation resistance.
TSUZUKI et al. (Wed,) studied this question.
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