Effect of Sn content on the passivity of Ti-Ta-Sn alloys

In this work, Ti-13Ta-xSn samples were manufactured using the powder metallurgy technique with a porosity near 35 %. The microstructural analysis revealed that increased Sn content decreased the alpha-Ti and alpha'-Ti phases. Furthermore, scanning electron microscopy and X-ray photoelectron spectroscopy showed that the chemical composition of the passive oxide film was influenced by the Sn content. Moreover, the electrochemical analysis revealed that the protective properties of oxide film improved with the Sn addition.

Automated summary

In this study, Ti-13Ta-xSn samples with a porosity of approximately 35% were produced using the powder metallurgy technique. Microstructural analysis revealed that increasing the Sn content resulted in a decrease in the alpha-Ti and alpha'-Ti phases. Additionally, scanning electron microscopy and X-ray photoelectron spectroscopy demonstrated that the chemical composition of the passive oxide film was influenced by the Sn content. Furthermore, electrochemical analysis indicated that the protective properties of the oxide film were enhanced with the addition of Sn.