Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Adhesion evaluation of nanostructured coatings on titanium alloy for biomedical applications
Submission Author:
Andre Luiz Abou Hatem , PR
Co-Authors:
Luiz Felipe Reali, Jianliang Lin, Ronghua Wei, Ricardo Torres, Carlos augusto Henning Laurindo, Paulo Soares, Andre Luiz Abou Hatem
Presenter: Andre Luiz Abou Hatem
doi://10.26678/ABCM.COBEM2017.COB17-2383
Abstract
The unsatisfactory wear resistance verified in biomedical applications of titanium alloy has been considered as the major concern in its long-term application inside the human body. The tribocorrosion performance of implants in body fluid has been improved by the deposition of innovative thin hard coatings on sliding contact surfaces. Accordingly, the coating adhesion to the implant materials turns into a fundamental concern for the success of these coatings development on the biomedical field. Therefore, adhesion of Diamond-like carbon (DLC) and Ti-(Si)-C-N biomedical nanostructured coatings on titanium alloy was evaluated by Rockwell-C and scratch adhesion test. Both coatings presented delamination mode failure, however, differences between test methods were observed. Also, the results revealed that the adhesion responses are affected by higher internal stresses on DLC coating and the chemical composition of Ti-(Si)-C-N coating.
Keywords
adhesion, DLC, diamond-like carbon, TiSiCN, Rockwell-C, scratch test, Biomedical, nanocomposite, Nanostructured, Coatings, titanium
