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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Siadati, M. Hossein
in Cooperation with on an Cooperation-Score of 37%
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Publications (4/4 displayed)
- 2024Improving the inflammatory-associated corrosion behavior of magnesium alloys by Mn3O4 incorporated plasma electrolytic oxidation coatingscitations
- 2024Corrosion behavior of PEO coatings with Mn3O4 on Mg-Zn-Ca alloys in inflammatory conditions
- 2024Tuning biomechanical behavior and biocompatibility of Mg–Zn–Ca alloys by Mn3O4 incorporated plasma electrolytic oxidation coatingscitations
- 2020Preparation of polyaniline/graphene coated wearable thermoelectric fabric using ultrasonic-assisted dip-coating methodcitations
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document
Corrosion behavior of PEO coatings with Mn3O4 on Mg-Zn-Ca alloys in inflammatory conditions
Abstract
| openaire: EC/H2020/860462/EU//PREMUROSA ; INTRODUCTION: The inflammatory response triggered by orthopedic devices results in the generation of reactive oxygen species (ROS) and a decrease in pH, accelerating the corrosion rate of Mg implants. To address corrosion challenges, various strategies are explored, including alloying with zinc and calcium elements and surface modifications. Plasma electrolytic oxidation (PEO) emerges as a promising technology, forming porous MgO coatings on Mg surfaces [1]. The electrolyte composition and the incorporation of additives not only affect coating characteristics but also influence the thickness and porosity of PEO coatings, collectively playing crucial roles in determining and preventing corrosion [2]. This study underscores the potential use of additives with ROS-scavenging properties, such as manganese-based additives in the PEO electrolyte, and the synthesis of MgO-Mn3O4 coatings on Mg-Zn-Ca alloy, as a means to mitigate corrosion rates, especially in inflammatory conditions. EXPERIMENTAL: In this study, PEO coatings incorporating Mn3O4 were fabricated on Mg-Zn-Ca substrate using two distinct methods: the introduction of KMnO4 salt and the inclusion of Mn3O4 nanoparticles in the electrolyte composition. In the first approach, composite coatings were chemically synthesized within the plasma microdischarge area, while the second route involved physical processes through electrophoretic adsorption. The electrochemical and immersion corrosion tests were conducted under simulated normal conditions using a PBS solution (pH 7) and under inflammatory conditions, achieved by introducing H2O2 and HCl (pH 5.2) into the PBS solution. RESULTS AND DISCUSSION: The experimental results showed that the inclusion of KMnO4 into electrolyte led to a reduction in voltages, while Mn3O4 resulted in an elevation in process voltages, directly impacting the structural characteristics of the coatings. Importantly, incorporating these additives decreases surface porosity and increases PEO coating ...