Synthesis and characterization of nanoparticles of Alnico alloys

Xingguo Li, Akihiko Chiba, Masayosi Sato, Seiki Takahashi

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Nanoparticles of Alnico 4 (Fe-12% Al-28% Ni-5% Co) and Alnico 5 (Fe-8% Al-14% Ni-24% Co-3%-Cu) alloys with the mean particle diameter from 12 to 34 nm were successfully produced by hydrogen plasma metal reaction. The particle features, oxidization behavior and magnetic properties were studied. The nanoparticles have the same crystalline structure and lattice parameter as the master alloys, and a new phase or non-equilibrium phase has not been observed. With an increase in the mean particle, the oxidization temperature and the saturation magnetization are decreased, but the coercive force is enhanced.

Original languageEnglish
Pages (from-to)5593-5600
Number of pages8
JournalActa Materialia
Volume51
Issue number18
DOIs
Publication statusPublished - 2003 Oct 20
Externally publishedYes

Keywords

  • Alnico alloy
  • Magnetic properties
  • Morphology
  • Nanoparticles
  • Oxidation
  • Plasma

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

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