Investigation of mechanical and tribological properties of amorphous diamond-like carbon coatings

Investigation of mechanical and tribological properties of amorphous diamond-like carbon coatings We investigated the mechanical and tribological properties of amorphous diamond-like carbon (DLC) coatings deposited on Si(100) by a pulsed bias deposition technique. Tribological studies were performed using a pin-on-disc (POD) apparatus under a normal load of 6.25 N and at 10% relative humidity, with a ruby pin as a slider. Hardness measurements were performed using a nanoindenter and apparent fracture toughness using indentation techniques. We studied the influence of residual stresses on apparent fracture toughness. The data revealed that the thickness, hardness and compressive stress of the coating play different roles in the apparent fracture toughness. Crack initiation is influenced by the thickness and hardness of the coating, whereas crack propagation is influenced by the compressive stress in the film. The apparent fracture toughness of DLC coatings increased with coating hardness. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Tribology International Elsevier

Investigation of mechanical and tribological properties of amorphous diamond-like carbon coatings

Tribology International, Volume 30 (8) – Jul 1, 1997

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Publisher
Elsevier
Copyright
Copyright © 1997 Elsevier Science Ltd
ISSN
0301-679X
eISSN
1879-2464
D.O.I.
10.1016/S0301-679X(97)00027-3
Publisher site
See Article on Publisher Site

Abstract

We investigated the mechanical and tribological properties of amorphous diamond-like carbon (DLC) coatings deposited on Si(100) by a pulsed bias deposition technique. Tribological studies were performed using a pin-on-disc (POD) apparatus under a normal load of 6.25 N and at 10% relative humidity, with a ruby pin as a slider. Hardness measurements were performed using a nanoindenter and apparent fracture toughness using indentation techniques. We studied the influence of residual stresses on apparent fracture toughness. The data revealed that the thickness, hardness and compressive stress of the coating play different roles in the apparent fracture toughness. Crack initiation is influenced by the thickness and hardness of the coating, whereas crack propagation is influenced by the compressive stress in the film. The apparent fracture toughness of DLC coatings increased with coating hardness.

Journal

Tribology InternationalElsevier

Published: Jul 1, 1997

References

  • Surface Coatings Technology
    Liu; Erdemir, A.; Meletis, Ei.

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