Preparation of ultra-fine amorphous powders by the chemical reduction method and the properties of their sintered products

Junji Saida, Akihisa Inoue, Tsuyoshi Masumoto

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Ultra-fine amorphous powders in (Fe, Co, Ni)-B binary and ternary systems were produced by the chemical reduction method. The powders have a spherical shape with diameters ranging from 5 to 50 nm. The reaction consists mainly of the process of producing Me2B and Me(Me = Fe, Co, Ni. Fully dense bulks of the ultra-fine amorphous (Fe, Co, Ni)-B powders were prepared by hot-pressing at temperatures below the crystallization temperature. Their densities are almost equal to those of the corresponding arc-melted powders. The hardness values of the hot-pressed compacts are considerably lower than those of the melt-spun amorphous ribbons with the same compositions.

Original languageEnglish
Pages (from-to)771-774
Number of pages4
JournalMaterials Science and Engineering A
Volume133
Issue numberC
DOIs
Publication statusPublished - 1991 Mar 15
Externally publishedYes

ASJC Scopus subject areas

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

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