Abstracts Book - IMRC 2018

• SE2-O016
TRIBOLOGICAL PERFORMANCE OF TERNARY TIMN FILMS (M=Al, B
and Cr) DEPOSITED BY CATHODIC ARC ON M2 STEEL
Gabriela Mendoza Leal 1 , Carolina Hernandez Navarro 2 , Ernesto David García Bustos 3 , Johan
Restrepo 4 , Martin Flores Martinez 5 , Eduardo Rodríguez 5
1 Tecnológico Nacional de México/Instituto Tecnológico de Celaya, Departamento de Ingeniería
Química, Mexico. 2 Tecnológico Nacional de México/Instituto Tecnológico de Celaya,
Departamento de Ingeniería Mecánica, Mexico. 3 Universidad de Guadalajara, Cátedras
CONACYT-Departamento de Ingeniería de Proyectos, Mexico. 4 SADOSA, Recubrimientos,
Mexico. 5 Universidad de Guadalajara, Departamento de Ingeniería de Proyectos, Mexico.
In the industry, the titanium nitride (TiN) coating is widely used in cutting tools,
decorative and corrosion protection film, but unfortunately this coating
presented a poor performance under some work condition. For that, different
studies have been dedicated to improve its properties with the inclusion of a
third element that modify the film structure, chemical and mechanical
properties. Some of these materials are aluminum (Al), boron (B), niobium (Nb),
silicon (Si) and chromium (Cr) that increase its thermal stability, hardness, wear
and corrosion resistance under specific work conditions.
In this work, TiN layers with Al, B and Cr inclusion were studied in order to
analyze their effect in the film tribological performance. These were deposited
using cathodic arc PVD technic on AISI-M2 steel. They were chemical and
structural characterized using EDX and XRD, respectively. While the film
thickness was determinate using ball-cratering technique. Their tribological
performance was studied using a sliding reciprocating movement in dry
condition, under 1, 2 and 3 N normal loads, at 1800 sec against Al 2 O 3 ball as
counterbody. The resulting wear tracks were studied using optical and
electronic microscopy in order to study the wear mechanism presented on each
film. Raman spectroscopy was used to determinate the chemical changes
produced on wear zones and the lost material were measured with a mechanical
profilometer.
As result, the films structure and morphology were modify with the inclusion of
the third element. The TiN with inclusion of Al and B presented a higher friction
force and wear rate than TiN films. While the TiN with Cr inclusion film presented
the best tribological performance with lower wear rate and friction
coefficient. The Raman studies results, except for TiAlN coating, did not exhibit
chemical changes in the films worn zones that shows good chemical stability.