Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Preparation of Ultrafine Nickel Powders by Wet Reduction Process

습식 환원법에 의한 니켈 미분말의 제조

  • Lee, Yoon-Bok (School of materials Science and Engineering, Pusan National University) ;
  • Moon, Young-Tae (MLCC Technical group, Samsung Electro-Mechanics Co., Ltd,) ;
  • Shin, Dong-Woo (Division of Mterials Science and Engineering, Gyeongsang National University) ;
  • Kim, Kwang-Ho (School of materials Science and Engineering, Pusan National University)
  • Published : 2002.10.01
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Abstract

Nickel powders were prepared from nickel chloride solution by wet reduction process, and the size control of the particles was investigated with reactant concentration, dispersant agent, and the addition of ethanol as an organic solvent in NiCl$_2$ aqueous solution. The size of the particle decreased with the increase of nickel chloride concentration. Their average particle size were 1.9$\mu\textrm{m}$, 1.6$\mu\textrm{m}$ and $1.5\mu\textrm{m}$ with 0.5M, 0.8M and 1.0M of nickel chloride concentration respectively. The spherical particle was easily controlled by the addition of ethanol as an organic solvent. Especially, in 30 vol% of ethanol, the average particle size and specific surface area were about 0.2$\mu\textrm{m}$ and 8.98m$^2$/g, respectively.

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