High corrosion resistant Ni-based glassy alloys in boiling nitric acid solutions

C. L. Qin, K. Asami, H. Kimura, W. Zhang, D. V. Louzguine, A. Inoue

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The Ni57Nb19Zr19Ta5 glassy alloy possesses high corrosion resistance in severe environments, i.e. boiling 6N HNO3 and 6N HNO3 + 5 g/1 Cr6+ solutions. In both solutions, the corrosion resistance of the Ni57Nb 19Zr19Ta5 alloy is much better than that of NAR-3 lONb stainless steel which is developed as nitric acid corrosion resistant stainless steel. XPS analysis reveals that the high corrosion resistance of the Ni-based glassy alloys is due to the formation of the highly protective passive film composed exclusively of Nb5+ and Ta5+ cations after immersion in the solution without Cr6+ ions, and Nb5+, Ta5+ and Cr3+ cations after immersion in the solution with Cr6+ ions.

Original languageEnglish
Pages (from-to)1304-1307
Number of pages4
JournalMaterials Transactions
Volume50
Issue number6
DOIs
Publication statusPublished - 2009 Jun

Keywords

  • Corrosion resistance
  • Glassy alloys
  • Nitric acid
  • Polarization curves
  • X-ray photoelectron spectroscopy (XPS) analysis

ASJC Scopus subject areas

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

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