Corrosion resistance improvement of titanium base alloys
AUTOR(ES)
Popa, Mihai V., Vasilescu, Ecaterina, Drob, Paula, Vasilescu, Cora, Drob, Silviu I., Mareci, Daniel, Rosca, Julia C. Mirza
FONTE
Química Nova
DATA DE PUBLICAÇÃO
2010
RESUMO
The corrosion resistance of the new Ti-6Al-4V-1Zr alloy in comparison with ternary Ti-6Al-4V alloy in Ringer-Brown solution and artificial Carter-Brugirard saliva of different pH values was studied. In Ringer-Brown solution, the new alloy presented an improvement of all electrochemical parameters due to the alloying with Zr; also, impedance spectra revealed better protective properties of its passive layer. In Carter-Brugirard artificial saliva, an increase of the passive film thickness was proved. Fluoride ions had a slight negative influence on the corrosion and ion release rates, without to affect the very good stability of the new Ti-6Al-4V-1Zr alloy.
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