ResumoO presente trabalho estudou o comportamento de uma liga de titânio ASTM-F67Gr1 frente à corrosão e à tribocorrosão em meio fisiológico. Para a realização desta pesquisa foi desenvolvido um aparato experimental capaz de impor simultaneamente um desgaste mecânico e corrosivo às amostras testadas, visando avaliar o comportamento tribocorrosivo. O meio corrosivo selecionado foi a solução de Ringer. A partir de curvas de polarização potenciodinâmica foi possível obter os parâmetros eletroquímicos necessários à realização dos ensaios de tribocorrosão bem como comprovar a excelente resistência a corrosão do titânio na solução de Ringer. A partir dos ensaios de tribocorrosão foi constatada a influência da velocidade e da carga aplicada, no fenômeno de tribocorrosão. Os resultados evidenciaram uma maior influência da velocidade no incremento da corrosão e da carga aplicada no incremento da sinergia, durante o desgaste tribocorrosivo. Palavras-chave: Tribocorrosão; Corrosão; Titânio; Biomateriais. STUDY OF CORROSION AND TRIBOCORROSION OF ASTM-F67GR1 TITANIUM IN RINGER'S SOLUTION AbstractIn this work it was studied the behavior of ASTM-F67Gr1 Titanium alloy considering the corrosion and tribocorrosion in a synthetic physiological solution. It was developed an experimental apparatus able to impose simultaneously a mechanical and corrosive wear to the tested samples in order to evaluate their tribocorrosive behavior. The corrosive medium selected was the Ringer's solution. The electrochemical parameters required to perform the tribocorrosion tests were obtained from the potentiodynamic polarization curves. From these curves it was possible to prove the excellent corrosion resistance of titanium in the Ringer solution. The influence of speed and load on tribocorrosion phenomenon was confirmed during the realization of tribocorrosion tests. The results showed a greater influence of the speed on corrosion during tribocorrosive wear and the effect of the applied load on the synergistic factor of tribocorrosive wear.
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