Corrosion behavior of bulk (Zr 58 Nb 3 Cu 16 Ni 13 Al 10 ) 100-x Y x (x = 0, 0.5, 2.5 at.%) metallic glasses in sulfuric acid

Liusi Yu, Junlei Tang, Hu Wang, Yingying Wang, Jichao Qiao, Mihai Apreutesei, Bernard Normand

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

Bulk (Zr 58 Nb 3 Cu 16 Ni 13 Al 10 ) 100-x Y x (x = 0, 0.5, 2.5 at.%) metallic glasses exhibited good passivation ability and outstanding corrosion resistance in de-aerated 0.5 mol/L H 2 SO 4 solution. It was mainly beneficial from the stable passive film which mainly consisted of ZrO 2 and Al 2 O 3 . However, the defects concentration in the passive films increased with the increasing yttrium content in the Zr-based BMGs. The yttrium additions improved the electrochemical homogeneities of the Zr-based BMGs, but facilitated the dissolution of Cu, resulting in a slight deterioration of corrosion resistance of the Zr-based BMGs.

Original languageEnglish
Pages (from-to)42-53
Number of pages12
JournalCorrosion Science
Volume150
DOIs
StatePublished - 15 Apr 2019

Keywords

  • Localized electrochemical impedance spectroscopy
  • Mott-Schottky
  • Scanning vibrating electrode technique
  • X-ray photoelectron spectroscopy
  • Yttrium
  • Zr-based bulk metallic glasses

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