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Preparation of Nickel Fine Powders from Aqueous Nickel Chloride Solution Containing Organic Solvents

유기용매를 함유한 염화니켈 수용액으로부터 Ni 미분말 제조

  • 최은영 (부산대학교 재료공학부) ;
  • 이상근 (부산대학교 재료공학부) ;
  • 이윤복 (부산대학교 재료공학부) ;
  • 문영태 (삼성전기(주) MLCC 기술팀) ;
  • 김광호 (부산대학교 재료공학부)
  • Published : 2003.05.01

Abstract

Nickel fine powders were prepared from aqueous nickel chloride solution containing organic solvents and the effect of the addition of the organic solvent on the formation of nickel powders were investigated. All products were spherical particles in the range of 0.1∼1.0 $\mu\textrm{m}$ and the agglomeration of particles did not appear. In case of containing 40 vol% of 1-propanol, the particle size reduction and homogeneity of the powders were remarkable. The average particle size and the specific surface area of the powders produced with 40 vol% of 1-propanol were 0.3 $\mu\textrm{m}$ and 16.4 m$^2$/g respectively. The reduction reaction time by hydrazine decreased with increasing of the content of 1-propanol, and was 5 min for 40 vol% of 1-propanol. The oxidation of synthesized nickel powders occurred at 320$^{\circ}C$ and weight loss at 300$^{\circ}C$ was due to dehydration of Ni(OH)$_2$.

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