Preparation of mono-disperse Ni powders via the reduction of hydrazine complexes: The effect of source materials and impurities

Kang Min Kim, Jong Heun Lee, Seon Mi Yoon, Hyun Chul Lee, Yong Kyun Lee, Jae Young Choi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Mono-disperse and spherical Ni powders were prepared using a N 2H4-based solution reduction route. The main focus was on manipulating the particle size by varying the source materials (Ni-chloride, Ni-sulfate and Ni-acetate) and impurity concentrations. The morphology and size of the Ni particle closely depended on the source materials. In addition, the particle size became significantly smaller with increasing Co concentration ranging from 0 to 350 ppm. The decrease in the Ni particle size was attributed to the promotion of nucleation by the rapid decomposition of the CoCl 2-N2H4 complex when adding a NaOH solution and the more active reduction of Co than that of Ni in the initial stages of the reaction.

Original languageEnglish
Pages (from-to)339-343
Number of pages5
JournalJournal of Electroceramics
Volume17
Issue number2-4
DOIs
Publication statusPublished - 2006 Dec

Keywords

  • Impurity
  • MLCC
  • Mono-disperse powder
  • Ni powder
  • Reduction in solution

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering
  • Materials Chemistry

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