Dealloying of Cu-Zr-Ti bulk metallic glass in hydrofluoric acid solution

Hiroya Abe, Kazuyoshi Sato, Hiroshi Nishikawa, Tadashi Takemoto, Mikio Fukuhara, Akihisa Inoue

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The dealloying behavior of Cu60Zr30Ti10 metallic glass was investigated under free corrosion conditions using hydrofluoric acid (HF) solutions at room temperature. After immersing in HF solutions with various concentrations (0.05, 0.1, 0.5 and 1 M) for 300 s, color of all samples changed to be pinkish or peachy, which was ascribed to Cu based on the XRD patterns. According to the SEM-EDS study, HF immersion selectively leached the Zr and Ti elements, leaving Cu behind. Increasing the HF concentration increased the dealloying rate. Moreover, the HF concentration strongly influenced the surface morphology of the resulting Cu.

Original languageEnglish
Pages (from-to)1255-1258
Number of pages4
JournalMaterials Transactions
Volume50
Issue number6
DOIs
Publication statusPublished - 2009 Jun 1

Keywords

  • Bulk metallic glass
  • CuZrTi
  • Dealloying
  • Hydrofluoric acid
  • Microstructure

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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