Preparation of Fe-based monodisperse spherical particles with fully glassy phase

Ayako Miura, Wei Dong, Masahiro Fukue, Noriharu Yodoshi, Kenta Takagi, Akira Kawasaki

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

In this study, we prepared monodisperse spherical particles of a desired diameter using [(Fe0.5Co0.5)0.75B 0.2Si0.05]96Nb4 alloy; the particles were prepared by using an atomization process developed by us. The particles have perfect sphericity and narrow size distribution along with a homogeneous composition. The phase transitions of particles from the fully glassy phase to the crystalline phase via mixed phase structures occurred as the particle diameter was increased; the particles produced in the fully glassy phase in an argon atmosphere had a diameter of less than 300 μm. This allowed the estimation of the intrinsic critical cooling rate for the particles with a fully glassy phase, Rc:Rc varied in the range of 700-900 K/s and depended only on the initial temperature of the alloy melt.

Original languageEnglish
Pages (from-to)5581-5586
Number of pages6
JournalJournal of Alloys and Compounds
Volume509
Issue number18
DOIs
Publication statusPublished - 2011 May 5

Keywords

  • Amorphous materials
  • Metallic glasses
  • Microstructure
  • Powder metallurgy
  • Rapid-solidification

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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