Synthesis and mechanical properties of carbon nanotube/diamond-like carbon composite films

Hiroshi Kinoshita, Ippei Ippei, Hirokazu Sakai, Nobuo Ohmae

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Diamond-like carbon (DLC) coatings were successfully deposited on carbon nanotube (CNT) films with CNT densities of 1 × 109/cm2, 3 × 109/cm2, and 7 × 109/cm2 by a radio frequency plasma-enhanced chemical vapor deposition (CVD). The new composite films consisting of CNT/DLC were synthesized to improve the mechanical properties of DLC coatings especially for toughness. To compare those of the CNT/DLC composite films, the deposition of a DLC coating on a silicon oxide substrate was also carried out. A dynamic ultra micro hardness tester and a ball-on-disk type friction tester were used to investigate the mechanical properties of the CNT/DLC composite films. A scanning electron microscopic (SEM) image of the indentation region of the CNT/DLC composite film showed a triangle shape of the indenter, however, chippings of the DLC coating were observed in the indentation region. This result suggests the improvement of the toughness of the CNT/DLC composite films. The elastic modulus and dynamic hardness of the CNT/DLC composite films decreased linearly with the increase of their CNT density. Friction coefficients of all the CNT/DLC composite films were close to that of the DLC coating.

Original languageEnglish
Pages (from-to)1940-1944
Number of pages5
JournalDiamond and Related Materials
Volume16
Issue number11
DOIs
Publication statusPublished - Nov 2007
Externally publishedYes

Fingerprint

Carbon Nanotubes
Diamond
Carbon films
Composite films
Diamonds
Carbon nanotubes
diamonds
carbon nanotubes
mechanical properties
Mechanical properties
composite materials
carbon
synthesis
Carbon
coatings
Coatings
toughness
test equipment
indentation
Indentation

Keywords

  • Carbon nanotube
  • Composite film
  • Diamond-like carbon
  • Friction
  • Hardness
  • Toughening

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Synthesis and mechanical properties of carbon nanotube/diamond-like carbon composite films. / Kinoshita, Hiroshi; Ippei, Ippei; Sakai, Hirokazu; Ohmae, Nobuo.

In: Diamond and Related Materials, Vol. 16, No. 11, 11.2007, p. 1940-1944.

Research output: Contribution to journalArticle

Kinoshita, Hiroshi ; Ippei, Ippei ; Sakai, Hirokazu ; Ohmae, Nobuo. / Synthesis and mechanical properties of carbon nanotube/diamond-like carbon composite films. In: Diamond and Related Materials. 2007 ; Vol. 16, No. 11. pp. 1940-1944.
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