Simulated body fluid electrochemical response of Zr-based metallic glasses with different degrees of crystallization

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Detail(s)

Original languageEnglish
Pages (from-to)4183-4187
Journal / PublicationMaterials Science and Engineering C
Volume33
Issue number7
Online published13 Jun 2013
Publication statusPublished - Oct 2013
Externally publishedYes

Abstract

The bio-electrochemical response in simulated body fluid of the Zr53Cu30Ni9Al8 metallic glasses with different degrees of partial crystallization was systematically examined and discussed. Through thermal annealing, the volume fractions of the crystalline phases are determined to be 0, 34, 63, and near 100%. Based on the bio-corrosion voltage and current, as well as the polarization resistance, it is concluded that the fully amorphous alloy exhibits the highest bio-electrochemical resistance. With an increasing degree of partial crystallization, the corrosion resistance becomes progressively degraded. The passive current reveals that the fully amorphous metallic glasses can form a more protective and denser passive film on the metallic glass surface. The formation of reactive nanocrystalline phases in the amorphous matrix would reduce the bio-corrosion resistance.

Research Area(s)

  • Annealing, Bio-corrosion resistance, Crystallization, Metallic glasses, Nanocrystalline phase

Citation Format(s)