Analysis of microstructural evolutions during advanced ceramics processing: II. Vibratory deposition of monodisperse particulate system

세라믹 제조시 미세구조 변화의 해석:II. 단분산 입자계의 진동성형

  • Kim, Ho-Yeon (Department of Chemical Engineering, Myung Ji University) ;
  • Kim, Hern (Department of Chemical Engineering, Myung Ji University)
  • 김호연 (명지대학교 화학공학과) ;
  • 김헌 (명지대학교 화학공학과)
  • Published : 1998.08.01

Abstract

A computer experimental model for analyzing the microstructures and properties of vibratory deposited power compacts was developed. The effects of some significant variables such as amplitude, frequency, cycle, etc. on the change of diffraction patterns and packing densities of the deposited powder compacts were examined. In addition, the condition of phase transition from non-crystalline phase to crystalline one was determined. Data obtained from the present method quite well fitted the empirical correlations for real experimental data. In conclusion, the present model is so useful to investigate the densification and ordering of vibratory compaction.

단분산 입자계의 진동성향시 공정조건에 따라 형성되는 침점체의 미세구조와 물성을 분석할 수 있는 전산실험 모델이 개발되었다. 여기서 중요한 진동성형 변수들인 진폭(amplitude), 침적시간(frequency), 진동횟수(cycle)가 형성되는 침적체의 회절구조 및 충전밀도에 미치는 영향이 조사되었다. 형성되는 침적체의 비결정상으로부터 결정상으로의 상변이 조건이 결정되었다. 모델의 결과는 실제 실험결과를 만족시키는 진동횟수와 충전밀도의 경험식과도 부합하였다. 현 모델은 진동성형시 침적체의 조밀화 현상과 결정화 현상을 조사하는데 매우 효과적이다.

Keywords

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