Improvement of Corrosion Resistance and Biocompatibility of Biodegradable Mg–Ca Alloy by ALD HfZrO2 Film

Polycrystalline HfZrO2 (HZO) film can be fabricated on as-extruded Mg–Ca alloy, which is identified by the results of XRD and TEM. HZO film can improve the corrosion resistance of as-extruded Mg–Ca alloy to further result in a decrease in the corrosion rate of Mg–Ca alloy. Corrosion current density,...

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Veröffentlicht in:	Coatings (Basel) 2022-02, Vol.12 (2), p.212
Hauptverfasser:	Lin, Pi-Chen, Lin, Kaifan, Lin, Yu-Hsuan, Yang, Kai-Chiang, Semenov, Vladimir Ivanovitch, Lin, Hsin-Chih, Chen, Miin-Jang
Format:	Artikel
Sprache:	eng
Schlagworte:	Biocompatibility Biodegradability Calcium Corrosion currents Corrosion rate Corrosion resistance Corrosion resistant alloys Electrodes Extrusion Magnesium base alloys Plasma Protective coatings Spectrum analysis Toxicity Zirconium dioxide
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Beschreibung
Zusammenfassung:	Polycrystalline HfZrO2 (HZO) film can be fabricated on as-extruded Mg–Ca alloy, which is identified by the results of XRD and TEM. HZO film can improve the corrosion resistance of as-extruded Mg–Ca alloy to further result in a decrease in the corrosion rate of Mg–Ca alloy. Corrosion current density, pH value evaluation, and the corrosion surface image provide evidence of improvement in corrosion rate. Compared with ZrO2 film, HZO film shows better short-term corrosion resistance. The results of WST-1 assay and LDH assay show that HZO film has low toxicity and is suitable for the protective coating of biological implants.
ISSN:	2079-6412 2079-6412
DOI:	10.3390/coatings12020212