کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1688861 1011197 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Metal incorporation strategies in DLC (fullerene-like) thin films grown by ECR-CVD
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
پیش نمایش صفحه اول مقاله
Metal incorporation strategies in DLC (fullerene-like) thin films grown by ECR-CVD
چکیده انگلیسی

The main aim of this work is the comparison among different methods for metal incorporation in Diamond-Like Carbon (DLC, fullerene-like) Carbon for improving the tribological properties. The films have been grown by Electron Cyclotron Resonance Chemical Vapour Deposition (ECR-CVD) applying a negative bias voltage to the substrate. Structural characterization of the samples was performed by Raman spectroscopy and SEM microscopy. The tribological behaviour (friction coefficient and wear) was evaluated by pin-on-disc tests. We have dealt with several approaching methods for the introduction of metal (Cr, Mo) during the growth of carbon coatings. Metallic atoms supply has been provided in two approaches: a) by placing a target (bulk or biased-mesh) inside the deposition system (in-situ methods), or b) from nanoparticles dispersions (ex-situ). The metal-containing films present a low friction coefficient roughly similar to the reference DLC film. When in-situ methods are applied lower wear strength has been detected. Otherwise, we have seen that the incorporation of Cr nanoparticles, coming from 300 ppm ethanol dispersion, produces a significant improvement in the tribological behaviour of the sample, as shown by the severe increase in the sliding distance until coating rupture. Therefore, from the comparison among the three different methods we can infer the clear key role played by the incorporated metal nanoparticles into fullerene-like carbon films for the improvement in the tribological properties of the nanocomposites.


► Metal incorporation strategies in DLC (fullerene-like) films grown by ECR-CVD.
► In-situ incorporation method (from metal target inside the plasma).
► Ex-situ incorporation method (spreading metal nanoparticles, before film growth).
► Improvement of adherence and durability by incorporation of metal nanoparticles.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 85, Issue 12, 5 June 2011, Pages 1140–1143
نویسندگان
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