AVS 57th International Symposium & Exhibition
    Tribology Focus Topic Thursday Sessions
       Session TR-ThP

Paper TR-ThP3
Tribocorrosion Behavior of TiAlN and TiAlN/TiAl Multilayers

Thursday, October 21, 2010, 6:00 pm, Room Southwest Exhibit Hall

Session: Tribology Focus Session Poster Session
Presenter: M. Flores, Universidad de Guadalajara, Mexico
Authors: M. Flores, Universidad de Guadalajara, Mexico
E. Rodríguez, Universidad de Guadalajara, Mexico
O. Jiménez, Universidad de Guadalajara, Mexico
J. García, Universidad de Guadalajara, Mexico
L. Huerta, Universidad Nacional Autonoma de Mexico
Correspondent: Click to Email

In the present work we investigate the tribocorrosion behavior of TiAlN, TiAlN/TiAl and TiAlN/TiAl/Pt coatings deposited on 316L stainless steel by magnetron sputtering. The period size of the multilayers was from 250nm to 1350 nm. The friction and wear tests were performed on a ball-on-flat tribometer and conducted in dry (unlubricated) conditions at room temperature. The loads used were 1 to 10 N, the oscillating frequencies were 1-5 Hz. The corrosion was studied using open circuit potential (OCP) measurements and potentiodynamic polarization in ringer solutions. Tribocorrosion tests were performed using a ball-on-flat tribometer where the sliding contact is fully immersed in a Ringer's solution. The potentiodynamic polarizations and OCP measurements were performed during, and after sliding test. The structure and composition of multilayers were studied by means of XRD and XPS techniques respectively. The surface topography and worn surface were studied by means of optical microscopy and profilometry. The results indicate that coefficient of friction (COF) of TIAlN coatings decreased when metal layers are introduced and the corrosion resistance of TiAlN/TiAl coatings is improved when Pt layers are introduced. The synergy effect of the tribocorrosion tests is reported.