한국전기전자재료학회:학술대회논문집 (Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference)

한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
권호 표지

고에너지 볼밀로 만든 $LaAlO_3$ 분말의 합성과 소결 특성

Synthesized and sinteristics of $LaAlO_3$ ceramics from high energy ball milling powders

  • 최상수 (동명정보공업고등학교 정보전자과) ;
  • 서병준 (부경대학교 공과대학 전자공학과) ;
  • 정수태 (부경대학교 공과대학 전자공학과)
  • 발행 : 2003.07.10
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초록

Fine $LaAlO_3$ powders were successfully synthesized from $La_2O_3$ and ${\gamma}-Al_2O_3$ powders milling for $10{\sim}50hrs$ via the high energy milling technique (mechanochemical methode) in room temperature and air. The particle size of $LaAlO_3$ powder were estimated from XRD patterns and SEM images to be $160{\sim}180nm$. The $LaAlO_3$ ceramics are derived for the synthesized powders (milling for 10, 30 and 50hrs) by sintering at $1400^{\circ}C$. The micrographs of grains showed a agglomeration and the degree of agglomeration increased with the milling time. The $LaAlO_3$ made from synthesized powders milling for 30hrs can be sintered to 98% of theoretical density at $1,400^{\circ}C$ for 4hrs.

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