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Synthesis of Cr-doped Celsian Green Pigments and Their Application

Cr-doped Celsian계 녹색안료의 합성과 적용

  • Chung, Hyun-Sik (Department of Material Science & Engineering, Myongji University) ;
  • Kim, Yeon-Ju (Department of Material Science & Engineering, Myongji University) ;
  • Choi, Soo-Nyong (Department of Material Science & Engineering, Myongji University) ;
  • Lee, Byung-Ha (Department of Material Science & Engineering, Myongji University)
  • 정현식 (명지대학교 신소재공학과) ;
  • 김연주 (명지대학교 신소재공학과) ;
  • 최수녕 (명지대학교 신소재공학과) ;
  • 이병하 (명지대학교 신소재공학과)
  • Received : 2010.07.13
  • Accepted : 2010.09.07
  • Published : 2010.09.30

Abstract

During the process of synthesizing green celsian pigments, attempts were made to replace a given amount of $BaCO_3$ with $SrCO_3$ to accelerate the hexagonal to monoclinic celsian phase transition, which was assumed to promote color development. Monoclinic celsian have been synthesized from Hongkong-Kaolin, $BaCO_3$, $SrCO_3$, $Al(OH)_3$, $SiO_2$ and $SrCO_3$ with 1 to 1.5 wt% of LiF as a mineralizer from 1100 to $1300^{\circ}C$. It was found that replacing $BaCO_3$ with $SrCO_3$ allowed monoclinic celsian to be formed at a lower temperature. While the pigments containing 1 mole of $BaCO_3$ were difficult to synthesize monoclinic celsian with absence of the mineralizer, the formation of monoclinic celsian was successfully achieved even without mineralizer by using 0.25 mole of $SrCO_3$ at $1250^{\circ}C$ for 1 h. The color development was improved from yellowish green to green with increasing amount of $SrCO_3$ being replaced.

Keywords

References

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