Effect of Sn addition on the corrosion behavior of Ti‐Ta alloy

Abstract

Abstract In the present paper, the effect of Sn addition on phase constitution and corrosion behavior of Ti 65 Ta (35− x ) Sn x ( x = 0, 1, 3, 5 at%) alloys has been investigated using X‐ray diffraction and electrochemical measurements. The results show that the β phase is stabilized when quenching after the addition of Sn into Ti 65 Ta 35 alloy, with Ti 65 Ta 30 Sn 5 alloy consisting of single β phase at room temperature. The corrosion resistance is enhanced with increase in the Sn content. When the Sn content increases up to 5%, the addition of Sn results in a decrease of corrosion current density from 0.690 µA/cm 2 of the Ti 65 Ta 35 alloy to 0.098 µA/cm 2 , and corresponding passive current density decreased from 37.7 µA/cm 2 of the Ti 65 Ta 35 alloy to 9.30 µA/cm 2 .