Solid nanocrystalline fullerite-containing carbon coatings

K. V. Oskomov, N. S. Sochugov, A. A. Solov'ev, S. V. Rabotkin

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Solid carbon coatings with a high content of nanocrystalline fullerite have been obtained using unbalanced magnetron sputtering of graphite under conditions of pulsed high-voltage ion bombardment of the film growing on a substrate. It is established that samples possessing the maximum hardness (18.8 GPa) are characterized by maximum values of the volume fraction of fullerite in the coating (50%), coherent scattering domain size (53 nm), degree of preferred grain orientation (85%), relative deformation of the lattice (1.02%), and internal compressive stresses (2.91 GPa). The observed behavior is consistent with the mechanism of strengthening that accounts for the phenomenon of superhardness in nanocrystalline and nanocomposite materials. This assumption is confirmed by the results of investigation of the morphology of growing coatings.

Original languageEnglish
Pages (from-to)889-892
Number of pages4
JournalTechnical Physics Letters
Volume35
Issue number10
DOIs
Publication statusPublished - 27 Nov 2009

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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