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

Paper TR-ThP6
Tribocorrosion Behavior of nc-TiN/a-Si3N4 Nanocomposite Deposited on Metallic Substrates for Biomedical Applications

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

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

The tribocorrosion property of a nc-TiN/a-Si3N4 nanocomposite deposited using DC and RF codeposition reactive magnetron sputtering technique on SS316L nitrated and Titanium Ti6Al4V alloy against ceramic and metallic balls was studied in comparison with substrate materials using a reciprocating tribotester in distilled water, 1% NaCl water solution and artificial saliva solution. The effects of load and reciprocating sliding speed on the tribocorrosion properties of the nanocomposite were investigated. The structure and composition of coatings were studied by means of XRD and XPS techniques respectively. Under the experimental conditions of the present study, the nc-TiN/a-Si3N4 nanocomposite showed excellent resistance against corrosion and lower wear rate compared with SS316L nitrated and Titanium substrates. Profilometer analysis shows that on both materials most of overall tribocorrosion damage is due to mechanical wear. The tests suggest that nc-TiN/a-Si3N4 nanocomposite is a promising biomaterial for applications where reciprocating conditions occur.