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Inicio  /  Coatings  /  Vol: 12 Par: 2 (2022)  /  Artículo
ARTÍCULO
TITULO

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

Pi-Chen Lin    
Kaifan Lin    
Yu-Hsuan Lin    
Kai-Chiang Yang    
Vladimir Ivanovitch Semenov    
Hsin-Chih Lin and Miin-Jang Chen    

Resumen

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.

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