Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Crystallization of srAl2O4 Synthesized by the Polymerized Complex Method

착체중합법으로 합성한 srAl2O4의 핵생성 관찰

  • Published : 2004.06.01
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Abstract

SrAl$_2$O$_4$ powder was prepared by polymerized complex method and its nucleation was observed at different temperatures and times. Problems of inhomogeneity and high synthesis temperature induced by solid state reaction could be solved by using polymeric precursors. The process of decomposition by heat treatment above 40$0^{\circ}C$ was observed by Scanning Electron Microscopy (SEM) and elemental analyzer. Crystallization of SrAl$_2$O$_4$ occured at about 90$0^{\circ}C$ and its crystalline size. which was determined by using Transmission Electron Microscopy (TEM) and X-Ray Diffractometer (XRD). was about 30∼50 nm.

착제중합법을 이용하여 SrAl$_2$O$_4$를 합성 시 핵생성 초기단계를 관찰하였다. 고상반응법을 이용했을 때의 문제점인 불균일성과 높은 합성온도를 유지전구체를 이용한 착체중합법으로 해결하였다. 전구체 분해과정은 40$0^{\circ}C$부터 관찰되었으며, 원소분석기와 주사전자현미경으로 관찰하였다. 핵생성 단계를 투과전자현미경으로 관찰하여 30∼50 nm의 결정이 생성되고 있음을 알 수 있었고, XRD 패턴들을 분석하여 그 관찰 결과와 일치함을 확인하였다.

Keywords

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