https://doi.org/10.1140/epjp/s13360-024-05757-0
Regular Article
Effect of pre-annealing temperature on electrochemical corrosion performance of the Au50Ag25Pd25 alloy in human artificial saliva
1
Department of Physics and Microelectronics, Zhengzhou University, Zhengzhou, China
2
Institute of Physics, Bahauddin Zakariya University, Multan, Pakistan
b
munamkhan255@gmail.com
c
amerziya@gmail.com
Received:
18
July
2024
Accepted:
18
October
2024
Published online:
29
October
2024
Au–Ag–Pd alloys are extensively applied in dentistry due to their excellent mechanical properties, high corrosion resistance, and biocompatibility. This research carried out to determine the effect of pre-annealing on electrochemical corrosion by using electrochemical techniques such as open-circuit potential (OCP), electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization (PDP). The Au50Ag25Pd25 alloy samples were annealed at 750 °C, 800 °C, and 900 °C. It was observed that as the pre-annealing temperature rises, the corrosion resistance steadily decreases because of the chemical inhomogeneity on the sample surfaces. Comparing the non-annealed sample (SN) to pre-annealed samples (S3, S5, and S7), potentiodynamic polarization parameters show that the SN has a higher polarization resistance and a lower corrosion current density. Imaging from scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS) reveals that the sample surface forms oxide films that become thinner with increase in pre-annealing temperature. These results provide insight into the behavior of corrosion of Au–Ag–Pd alloys and can help optimize their performance in dental applications.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
