Mechanical and tribological properties of TiCxN1−x wear resistant coatings
Source abstract
Abstract
The aim of this work is to investigate the mechanical and tribological properties of Tic x N 1-x wear resistant coatings grown on a Ti-0.2 Pd alloy substrate. Films were deposited by dual ion beam sputtering (DIBS) system with different proportions of N 2 and Ar in the assisting beam. The friction tests have been carried out with a pin-on-disc tribometer with different applied loads. The films present high hardness and elastic properties whose values depend upon preparation conditions. The mechanical properties and the tribological behaviour of the coatings seem to depend on their stoichiometry and microstructure. The coating TiC 0.5 N 0.5 shows less hardness and better wear resistance than the coating with stoichiometry Tic 0.15 N 0.85 . The influence of the stoichiometry and the local structure of the films on its mechanical properties have been ruled out.
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