Metallurgical and electrochemical properties of an Au-1,7% Ti alloy for dental applications
Keywords:Au-1,7%Ti alloy, Au-Pd alloy, Au-Pd-Ga-In alloy, polarization, precipitation hardening, biomaterials, corrosion
The micro-structure and micro-hardness of an Au-1,7%Ti alloy in different condi¬tions: centrifuged, solubilized and aged at 400°C during 4 hours were evaluated. Polarization curves obtained in an artificial physiological solution (Ringer) of the Au-1,7% Ti alloy, with and without surface passivation treatment, were compared to those of an Au-Pd-Ga-In alloy and pure gold. Results indicate that the Au-1,7% Ti alloy has a good response to the aging treatment in the passivated condition the alloy alsopresents a satisfactory, although lower, corrosion resistance with respect to the Au-Pd-Ga-In alloy.
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