Effect of cold rolling on electrochemical impedance behavior of new β-type Ti-6Mo-6V-5Cr-3Sn-2.5Zr alloy

Hocheol Song, Ahmad Zakiyuddin, Sinhye Kim, Kwangmin Lee

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, the corrosion properties of Ti-6Mo-6V-5Cr-3Sn-2.5Zr alloy were investigated as a function of the cold rolling ratio and annealing temperature. The annealing treatment was carried out at temperature of 680°C, 730°C, and 780°C. The highest corrosion potential observed in the specimen with a 10% rolling ratio was 179 mV, which was more positive than that of the nonrolled specimen (-0.214 Vssc). The lowest corrosion current density (1.30×10-8 A/cm2) was observed in the non-rolled specimen which suggested that the integrity of its passive oxide layer was superior to that of the cold-rolled specimens. Time-dependent EIS evaluation revealed that the consistency of the passive oxide layer was highly affected by the subjected rolling ratio over time.

Original languageEnglish
Pages (from-to)487-490
Number of pages4
JournalArchives of Metallurgy and Materials
Volume64
Issue number2
DOIs
Publication statusPublished - 2019

Keywords

  • Beta-titanium alloy
  • Electrochemical impedance spectroscopy
  • Potentiodynamic polarization

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