Soft magnetic properties of nanocrystalline Fe-Nb-B-P alloys produced in the atmosphere by melt-spinning method

A. Kojima, S. Ito, A. Makino, A. Inoue

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The soft magnetic properties of nanocrystalline Fe-Nb-B and Fe-Nb-B-P alloys produced in the atmosphere by a melt-spinning method have been investigated. The nanocrystalline Fe100-x-yNbxBy ternary alloys show good soft magnetic properties, relative permeability (μ′) above 35000 at a frequency of 1 kHz and coercive force (Hc) below 5.0 Am-1, as well as high saturation magnetic induction (Bs) above 1.55 T in the compositional range of x = 6.5-6.7 and y = 9.3-10.0 at%. The soft magnetic properties of the nanocrystalline Fe-Nb-B ternary alloys are improve by 0.5-1.5 at% substitution of P for B, without decreasing their Bs. The magnetostriction (λs) value increases and the mean grain size of bcc-Fe phase (D) decreases slightly by substitution of P for B. The nanocrystalline Fe84Nb6.5B9P0.5 and Fe84Nb6.5B8.5P1 alloys show good soft magnetic properties, μ′ of 46000-47000 at a frequency of 1 kHz, Hc of 3.6-3.9 Am-1 and the core loss the 0.09 Wkg-1 at maximum induction (Bm) of 1.33 T and a frequency of 50 Hz as well as high Bs of 1.60 T, suggesting that these nanocrystallin Fe-Nb-B-P alloys are suitable for a core materials for pole transformers.

Original languageEnglish
Pages (from-to)1535-1539
Number of pages5
JournalMaterials Transactions
Volume42
Issue number8
DOIs
Publication statusPublished - 2001 Jan 1
Externally publishedYes

Keywords

  • Crystallization
  • High saturation magnetic induction
  • Iron-niobium-boron-phosphorous alloy
  • Low core loss
  • Nanocrystalline

ASJC Scopus subject areas

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

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