Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Properties and Shape Control of YAG Powder Prepared by Hydrothermal Reaction

수열반응 조건에 의한 YAG 분말의 특성과 형상제어

  • 지성훈 (부산대학교 공과대학 무기재료공학과) ;
  • 김상문 (LG전자(주) Display사업본부 Display Device연구소) ;
  • 구자인 (부산대학교 공과대학 무기재료공학과) ;
  • 김태옥 (부산대학교 공과대학 무기재료공학과)
  • Published : 2000.08.01
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Abstract

YAG(Y3Al5O12) as host material of YAG:Tb3+ was studied via hydrothermal synthesis of metal hydroxides. We changed the kind of mineralizer, the concentrations and process conditions in hydrothermal synthesis. As a result, we found, acicular YAG powders were obtained by the use of KOH as a mineralizer, the concentration of KOH affected the shape and size of YAG powder. Fine grained YAG were perpared by the use of NH4OH as a mineralizer and the concentration of NH4OH affected crystal phases but did not affect particle size. We could finally get the spherical looking YAG powder at 8 M NH4OH and at 35$0^{\circ}C$ for 12h. The average particle size was about 0.2${\mu}{\textrm}{m}$.

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