Abstract
This article reports on interrelationships between x-ray structure, mechanical properties, coefficient of friction μ, and wear coefficient k of ∼3000 m thick nc-TiC/a-C nanocomposite films sputtered using unbalanced magnetron from a composed C/Ti target (Ø=100 mm); here nc and a denotes the nanocrystalline and amorphous phase, respectively. It is shown that (1) μ and k of the nc-TiC/a-C nanocomposite film strongly depend not only on its hardness H but also on its effective Young's modulus E* =E/ (1- ν 2); here ν is the Poisson s ratio, (2) the nc-TiC/a-C nanocomposite films with C/Ti>1.5 and the ratio H 3 / E* 2 (characterizing the resistance of film to plastic deformation) ranging from ∼0.2 to ∼0.3 exhibit the lowest values of μ and k, and (3) μ increases with increasing load L of the testing ball. The main result of this investigation is the finding that the achievement of the lowest value E* at a given value of H is of key importance in the formation of films with the lowest values of coefficient of friction μ and wear coefficient k.
| Original language | English |
|---|---|
| Pages (from-to) | 244-249 |
| Number of pages | 6 |
| Journal | Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films |
| Volume | 28 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 19 Mar 2010 |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
Cite this
Tribological and mechanical properties of nanocrystalline-TiC/a-C nanocomposite thin films. / Musil, J.; Novák, Petr; Čerstv́, R.; Soukup, Z.
In: Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films, Vol. 28, No. 2, 19.03.2010, p. 244-249.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Tribological and mechanical properties of nanocrystalline-TiC/a-C nanocomposite thin films
AU - Musil, J.
AU - Novák, Petr
AU - Čerstv́, R.
AU - Soukup, Z.
PY - 2010/3/19
Y1 - 2010/3/19
N2 - This article reports on interrelationships between x-ray structure, mechanical properties, coefficient of friction μ, and wear coefficient k of ∼3000 m thick nc-TiC/a-C nanocomposite films sputtered using unbalanced magnetron from a composed C/Ti target (Ø=100 mm); here nc and a denotes the nanocrystalline and amorphous phase, respectively. It is shown that (1) μ and k of the nc-TiC/a-C nanocomposite film strongly depend not only on its hardness H but also on its effective Young's modulus E* =E/ (1- ν 2); here ν is the Poisson s ratio, (2) the nc-TiC/a-C nanocomposite films with C/Ti>1.5 and the ratio H 3 / E* 2 (characterizing the resistance of film to plastic deformation) ranging from ∼0.2 to ∼0.3 exhibit the lowest values of μ and k, and (3) μ increases with increasing load L of the testing ball. The main result of this investigation is the finding that the achievement of the lowest value E* at a given value of H is of key importance in the formation of films with the lowest values of coefficient of friction μ and wear coefficient k.
AB - This article reports on interrelationships between x-ray structure, mechanical properties, coefficient of friction μ, and wear coefficient k of ∼3000 m thick nc-TiC/a-C nanocomposite films sputtered using unbalanced magnetron from a composed C/Ti target (Ø=100 mm); here nc and a denotes the nanocrystalline and amorphous phase, respectively. It is shown that (1) μ and k of the nc-TiC/a-C nanocomposite film strongly depend not only on its hardness H but also on its effective Young's modulus E* =E/ (1- ν 2); here ν is the Poisson s ratio, (2) the nc-TiC/a-C nanocomposite films with C/Ti>1.5 and the ratio H 3 / E* 2 (characterizing the resistance of film to plastic deformation) ranging from ∼0.2 to ∼0.3 exhibit the lowest values of μ and k, and (3) μ increases with increasing load L of the testing ball. The main result of this investigation is the finding that the achievement of the lowest value E* at a given value of H is of key importance in the formation of films with the lowest values of coefficient of friction μ and wear coefficient k.
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UR - http://www.scopus.com/inward/citedby.url?scp=77949354172&partnerID=8YFLogxK
U2 - 10.1116/1.3294717
DO - 10.1116/1.3294717
M3 - Article
VL - 28
SP - 244
EP - 249
JO - Journal of Vacuum Science and Technology A
JF - Journal of Vacuum Science and Technology A
SN - 0734-2101
IS - 2
ER -