Enhancement of glass-forming ability of CoFeBSiNb bulk glassy alloys with excellent soft-magnetic properties and superhigh strength

Qikui Man, Huaijun Sun, Yaqiang Dong, Baolong Shen, Hisamichi Kimura, Akihoro Makino, Akihisa Inoue

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

Co-based bulk glassy alloys with diameters up to 4.5 mm were formed in Co46Fe20B22+xSi6-xNb6 (x = 0-2) system. The increase of B to Si concentration ratio is effective in improving the glass-forming ability. In addition to high glass-forming ability, the glassy alloys exhibit excellent soft-magnetic properties, i.e., high saturation magnetization of 0.63-0.69 T, low coercive force of 1.17-2.35 A/m, and high effective permeability of 1.36-2.65 × 104 at 1 kHz under a field of 1 A/m. The bulk glassy alloys also exhibit superhigh fracture strength of 4400 MPa.

Original languageEnglish
Pages (from-to)1876-1879
Number of pages4
JournalIntermetallics
Volume18
Issue number10
DOIs
Publication statusPublished - 2010 Oct 1

Keywords

  • B. Glasses, metallic
  • B. Magnetic properties
  • B. Thermal stability

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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