The influence of partial replacement of Cu with Ga on the corrosion behavior of Ti40Zr10Cu36PD14 metallic glasses

Qi Wei, Petre Flaviu Gostin, Owen Addison, Daniel Reed, Mariana Calin, Supriya Bera, Parthiban Ramasamy, Alison Davenport*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

TiZrCuPdGa metallic glasses are under consideration for small dental biomedical implants. There is interest in replacing some of the Cu with Ga to improve the glass-forming ability and biocompatibility. Ti40Zr10Cu36-xPd14Gax (x = 0, 1, 2, 4, 8 and 10 at.%) metallic glasses in rod and ribbon forms were fabricated by mould casting and melt spinning, respectively, and electrochemically tested in a 0.9wt.% NaCl (0.154 M) solution. It has been shown that for both rod and ribbon samples Ga levels up to 8% have no significant effect on passive current density, pitting potential or cathodic reactivity in 0.9% NaCl at 37°C. Different pitting potential and corrosion potential values were found when ribbon and rod samples of the same composition were compared for all compositions apart from the one containing the highest Ga level (10%). This was attributed to structural relaxation occurring as a result of the slower cooling rates during casting rods compared with melt-spinning ribbons. Substitution of Ga for Cu in these metallic glasses therefore expected to have no significant effect on corrosion susceptibility.

Original languageEnglish
Pages (from-to)C485-C491
JournalJournal of the Electrochemical Society
Volume166
Issue number14
DOIs
Publication statusPublished - 2019

Bibliographical note

Funding Information:
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement no. 659226 (Petre-Flaviu Gostin). Financial support provided by EU Initial Training Network VitriMet-Tech, FP7-PEOPLE-2013-ITN-607080 is fully acknowledged. Qi Wei received a postgraduate research scholarship from School of Metallurgy and Materials, University of Birmingham.

Funding Information:
This project has received funding from the European Union?s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement no. 659226 (Petre-Flaviu Gostin). Financial support provided by EU Initial Training Network VitriMetTech, FP7-PEOPLE-2013-ITN-607080 is fully acknowledged. Qi Wei received a postgraduate research scholarship from School of Metallurgy and Materials, University of Birmingham.

Publisher Copyright:
© The Author(s) 2019.

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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