Nb-poor Fe-Nb-B nanocrystalline soft magnetic alloys with small amount of P and Cu prepared by melt-spinning in air

Akihiro Makino, Teruo Bitoh, Akihisa Inoue, Tsuyoshi Masumoto

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

The effect of the addition of P and Cu to Fe85Nb6B9 alloy on an as-quenched structure and soft magnetic properties in a nanocrystallized state has been investigated. The Fe85Nb6B9 alloy melt-spun in air has an as-quenched structure of an amorphous phase and α-Fe grains with 20-45 nm in size. The coarse grains should still remain in the nanocrystallized structure, which deteriorates the soft magnetic properties. The simultaneous addition of 1 at.% P and 0.1 at.% Cu to the Fe85Nb6B9 alloy decreases the α-Fe grain size to nanoscale in an as-quenched state, and realizes a uniform crystallized structure with high saturation induction of 1.61 T as well as high permeability of 41,000.

Original languageEnglish
Pages (from-to)869-874
Number of pages6
JournalScripta Materialia
Volume48
Issue number7
DOIs
Publication statusPublished - 2003 Apr 1
Externally publishedYes

Keywords

  • High permeability
  • High saturation magnetic induction
  • Nanocrystalline soft magnetic alloy
  • Rapidly solidified ribbon

ASJC Scopus subject areas

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

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