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 language | English |
|---|---|
| Pages (from-to) | 1940-1944 |
| Number of pages | 5 |
| Journal | Diamond and Related Materials |
| Volume | 16 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - Nov 2007 |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - Synthesis and mechanical properties of carbon nanotube/diamond-like carbon composite films
AU - Kinoshita, Hiroshi
AU - Ippei, Ippei
AU - Sakai, Hirokazu
AU - Ohmae, Nobuo
PY - 2007/11
Y1 - 2007/11
N2 - 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.
AB - 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.
KW - Carbon nanotube
KW - Composite film
KW - Diamond-like carbon
KW - Friction
KW - Hardness
KW - Toughening
UR - http://www.scopus.com/inward/record.url?scp=35348913238&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=35348913238&partnerID=8YFLogxK
U2 - 10.1016/j.diamond.2007.08.004
DO - 10.1016/j.diamond.2007.08.004
M3 - Article
AN - SCOPUS:35348913238
VL - 16
SP - 1940
EP - 1944
JO - Diamond and Related Materials
JF - Diamond and Related Materials
SN - 0925-9635
IS - 11
ER -