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 language | English |
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Pages (from-to) | C485-C491 |
Journal | Journal of the Electrochemical Society |
Volume | 166 |
Issue number | 14 |
DOIs | |
Publication status | Published - 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