Electrochemical behavior Al2O3/Al coated surgical AZ91 magnesium alloy in simulated body fluids

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Yunchang Xin
  • Chenglong Liu
  • Wenjun Zhang
  • Jiang Jiang
  • Guoyi Tang
  • Xiubo Tian

Detail(s)

Original languageEnglish
Journal / PublicationJournal of the Electrochemical Society
Volume155
Issue number5
Publication statusPublished - 2008

Abstract

Magnesium alloys are potential materials for use in biodegradable hard-tissue implants, but the fast degradation rate in a biological environment limits their applications. In order to improve the corrosion resistance, a dense, adhesive, and biocompatible Al2 O3 Al bilayered coating is fabricated on AZ91 magnesium alloy by means of filtered cathodic arc deposition. The electrochemical behavior is systematically studied in simulated body fluids using a potentiodynamic polarization test, open-circuit potential evolution, as well as electrochemical impedance spectroscopy. Our results indicate that the corrosion resistance of the coated alloy is significantly enhanced. The deterioration mechanism and corrosion process of the coating during immersion are discussed. © 2008 The Electrochemical Society.

Citation Format(s)

Electrochemical behavior Al2O3/Al coated surgical AZ91 magnesium alloy in simulated body fluids. / Xin, Yunchang; Liu, Chenglong; Zhang, Wenjun; Jiang, Jiang; Tang, Guoyi; Tian, Xiubo; Chu, Paul K.

In: Journal of the Electrochemical Society, Vol. 155, No. 5, 2008.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review