Tribological performance of DLC-coated stainless steel, TMA and Cu-NiTi - 24/12/08
Zakaria BENTAHAR [1],
Michel BARQUINS [2],
Martial CLIN [3],
Nezha BOUHAMMAD [4],
Khalid EL BOUSSIRI [5]
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Amorphous carbon films are characterized by lower friction and improved resistance to wear. The aim of our study was to investigate the tribological performance of diamond-like carbon (DLC) coated on CuNiTi, stainless steel and TMA orthodontic wires.
The substrates investigated (CuNiTi, stainless steel and TiMo) are alloys frequently used in orthodontics. Five centimetre long .019x.025 rods were attached to a stainless steel support. DLC depositions were performed using the plasma-enhanced chemical vapor deposition technique. A tribometer fitted with scales, a motor and an electronic sensor were used to calculate the friction coefficient. To check reproducibility, each test was repeated 10 times. All the data were gathered using WinDataq Lite software in order to measure the friction coefficient and to show any changes occurring over time.
The friction coefficient of the DLC-coated stainless steel vs DLC-non-coated stainless steel pair showed an increase as compared with the non-coated stainless steel pair. In contrast, the friction coefficient of the two other pairs (stainless steel/CuNiTi and stainless steel/TMA) decreased by 20 to 30%.
Keywords:
DLC
,
Friction
,
Stainless steel
,
TMA
,
CuNiTi
Plan
© 2008 Elsevier Masson SAS. Tous droits réservés.
Vol 6 - N° 4
P. 335-342 - décembre 2008 Retour au numéro
Article précédent
- Performances tribologiques de l’acier inoxydable, du TMA et du Cu-NiTi recouverts de DLC
- Zakaria BENTAHAR, Michel BARQUINS, Martial CLIN, Nezha BOUHAMMAD, Khalid EL BOUSSIRI
- Les corticotomies alvéolaires : principes et applications cliniques
- Marc THIERRY, Jean-Baptiste CHARRIER
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