Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Preparation of $BaTiO_3$ Powder by Coprecipitation Method

공심법에 의한 $BaTiO_3$ 분말제조

  • Kim, Yoon-Ho (Fine Ceramic Materials Lab. KAIST) ;
  • Lee, Joon (Dept. of Industrial Chemistry, KonKuk University) ;
  • Han, Il-Ho (Dept. of Industrial Chemistry, KonKuk University)
  • 김윤호 (한국과학기술원 정밀요업재료연구실) ;
  • 이준 (건국대학교 공업화학과) ;
  • 한일호 (건국대학교 공업화학과)
  • Published : 1986.04.01
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Abstract

$BaTiO_3$ ceramics powder was prepared by coprecipitation method either in oxalic acid solution or in potassium hydroxide solution. Thermal decomposition of coprecipitated $BaTiO(C_2O_4)_2$.$4H_2O$ powder in oxalic acid solution was investigated by means of Themogravimetry Differential Thermal Analysis and X-ray Diffraction Analysis. Low temperature decomposition of coprecipitated $BaTiO(C_2O_4)_2$.$4H_2O$ caused narrow particle size distribution whereas high temperature decomposition caused fairly wide particle size distribution by partial sintering. As the reaction time increased the average particle size of coprecipitated $BaTiO_3$ powder in KOH solution was increased. The most narrow paticle size distribution was obtained when the coprecipi-tates were ripened for 4hrs.

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References

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