Electrochemical behavior of annealed soft-magnetic FeSiBPCu alloy

Zhenhua Dan, Yasunobu Yamada, Yan Zhang, Masahiko Nishijima, Nobuyoshi Hara, Hiroyuki Matsumoto, Akihiro Makino

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The nanocrystalline soft-magnetic Fe83.3Si3B 10P3Cu0.7 ribbon alloy with a width of 10mm prepared through annealing amorphous Fe83.3Si3B 10P3Cu0.7 ribbon alloy at 698K had a saturation magnetization flux density of 1.82 T and a coercivity of 11.8Am-1. The nanoheteroamorphous microstructure consisted of -Fe nanocrystals with an average size of 22nm and amorphous neighbor phases. The results of polarization curves and electrochemical impedance spectra obtained in 0.5M Na 2SO4 and 0.5M NaCl solutions demonstrated the positive shift of the corrosion potentials, the decrease in the passive current density, the increase in the breakdown potentials and the increase in the polarization resistance for the nanocrystalline Fe83.3Si3B 10P3Cu0.7 ribbon alloy, compared with its amorphous counterpart alloy. The corrosion performance was improved via annealing, which is thought to result from the enrichment of B2O 3 constituent in the surface oxide layer.

Original languageEnglish
Pages (from-to)561-565
Number of pages5
JournalMaterials Transactions
Volume54
Issue number4
DOIs
Publication statusPublished - 2013
Externally publishedYes

Keywords

  • Electrochemical impedance spectroscopy
  • Nanocrystalline iron-based alloy
  • Polarization measurement
  • Soft-magnetic alloy
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

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

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