Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Influences of the Starting Salts on the Powder Characteristics of the Pb(Zr, Ti)$O_3$ Powders Prepared by Ultrasonic Spray Pyrolysis

원료염의 종류가 초음파 분무 열분해법에 의해 제조된 Pb(Zr, Ti)$O_3$미분말의 특성에 미치는 영향

  • 김희봉 (서울대학교 무기재료공학과) ;
  • 이종흔 (삼성종합기술원 에너지환경실)
  • Published : 1995.12.01
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Abstract

Influences of the starting salts on the phase and morphology of the Pb(Zr, T)O$_3$powders prepared by ultrasonic spray pyrolysis were studied. The Phases of the Powders Prepared from the combination of metal nitrate(or oxynitrate), acetate(or oxyacetate), and alkoxide were the Pb(Zr, Ti)O$_3$with or without minor PbTiO$_3$. The pores on the surface of the spherical particles increased with the nitrate content in the starting solution and their formation was thought to result from the decomposition characteristics of metal nitrate. Pb acetate, Zr oxyacetate, Ti oxynitrate, and Ti (isopropoxide+acetylacetonate) was suitable as the starting salts for the preparation of Pb(Zr, Ti)O$_3$powders by ultrasonic spray pyrolysis in the viewpoint of the phase and morphology of the powders.

초음파 분무 열분해법에 의해 합성된 Pb(Zr, Ti)O$_3$미분말의 원료염의 종류에 따른 상과 모양의 변화에 대해 조사했다. 질산염, 초산염, 알콕사이드등의 조합으로 만들어진 원료용액으로부터 합성된 미분말은 약간의 PbTiO$_3$를 포함하거나 포함하지 않는 Pb(Zr, Ti)O$_3$, 상을 나타내었다. 구형 이차입자의 표면에서 발견되는 표면 기공은 질산염의 함량증가에 따라 증가되며, 그 생성은 질산염의 열분해 특성에 기인되는 것으로 해석된다. 본 연구에서 초음파 분무 열분해법으로 합성된 미분말의상, 모양등의 분말특성을 고려할 때, Pb의 원료로서는 acetate, Zr의 원료로서는 oxyacetate, Ti의 원료로서는 oxynitrate 혹은 (iso-propoxide +acetylacetonate)가 적합한 것으로 판단된다.

Keywords

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