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, Miin Jang Chen

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Article number212
JournalCoatings
Volume12
Issue number2
DOIs
Publication statusPublished - Feb 2022

Keywords

  • Atomic layer deposition
  • Corrosion protection
  • HfZrO
  • Magnesium-calcium alloy

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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