A Comparison of the Tribology of Tetrahedral Amorphous Carbon and Hydrogenated Amorphous Carbon
Date Published: 2008-04-14
Paper Number:2008-01-1466
DOI: 10.4271/2008-01-1466
Citation:
Ledrappier, F., Houze, L., and Heau, C., "A Comparison of the Tribology of Tetrahedral Amorphous Carbon and Hydrogenated Amorphous Carbon," SAE Technical Paper 2008-01-1466, 2008, doi:10.4271/2008-01-1466.
Author(s):
F. Ledrappier - HEF R&D - France
L. Houze - HEF R&D - France
C. Heau - HEF R&D - France
Abstract:
The tribology of different DLC coatings is studied through different mechanical and tribological tests like micro-hardness, scratch tests, friction in different oils, dry friction and impact-wear tests. The different tests reveal that hydrogen-free DLC coatings exhibit high hardness and low friction coefficient against steel, in boundary lubrication regime. Unfortunately, the remarkable tribological properties of tetrahedral amorphous carbon (ta-C) coatings are balanced by a low fracture toughness and low endurance behaviour, which affect the durability of coated mechanical components.
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