Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Application of Crystallization Kinetics on Differential Thermal Analysis

열시차 분석에 대한 결정화 Kinetics의 응용

  • 이선우 (한양대학교 신소재 공정 공학원) ;
  • 심광보 (한양대학교 세라믹 공정 연구센터) ;
  • 오근호 (한양대학교 세라믹 공정 연구센터)
  • Published : 1998.11.01
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Abstract

Applicability of crystallization kinetics on thermal analysis was investigated for PbO-TiO2-B2O3-BaO glass systems together with theoretical background of kinetics and electron microscopic observations on nu-cleation and crystallization. Kissinger equation can be used on DTA under the assumption that the nucleus density is fixed during DTA runs. Crystallization mechanism affected on the activation energy Ek obtained from powder samples which is used for domination of surface crystallization. Avrami parameter n that was obtained from Ozawa equation represented closely the crystallization mechanisms observed by an electron microscope. The modified Kissinger equation takes into account crystallization mechanism thereby pro-ducing the true activation energy of crystallization.

PbO-TiO2-B2O3-BaO 계 유리상에서 PbTiO3의 결정화 메커니즘에 대한 이론적 고찰 및 전자현미경 관찰 그리고 결정화 기구의 열시차 분석에 대한 응용성을 조사하였다. 열시차 분석에 대한 Kissinger 식의 응용은 DTA 분석시 시료내 핵밀도가 변하지 않을 때 적용할 수 있으며, 표면결정화를 유도하기 위해 분말시료를 사용하는 경우도 활성화 에너지를 시료의 결정화 메커니즘에 크게 영향을 받는다. Ozawa 식에 의한 Avrami parameter n은 전자현미경 관찰에 의해 파악된 결정화메커니즘과 잘 일치하고 있었으며, 수정 Kissinger 식은 시료의 결정화 메커니즘을 반영하고 있어 시료의 전처리와 관계없이 참값의 활성화에너지를 구할 수 있다.

Keywords

References

  1. Advances in Ceramics v.4 Nucleation in Glass-forming Systemss a Reveiw P.F.James;J.H.Simmons(ed.);D.R.Uhlmann(ed.);G H.Beall(ed.)
  2. Advances in Ceramics v.4 Crystal Growth in Glass-forning Systems : A Ten-year Perspective D.R. Uhlmann;J.H.Simmons(ed.);G.H.Beall(ed.)
  3. Ceramic Transaction v.30 Nucleation and Crystallizatioin in Glasses as Determined by DTA C.S. Ray;D.E. Day;Michael C. Weinberg(Ed.)
  4. Phys. Chem. Glasses v.37 no.6 Determination of the Nucleation Rate Curve for Lead Titanate Glass by Differential Thermal Analysis S.W. Lee;V. Deshpande;R. Stevens;P. Knott
  5. J. Am. Chem. Soc. v.79 The Application of Differential Thermal Analysis to the Study of Reaction Kinetics Hans J. Borchardt;Farrington Daniels
  6. Analyical Chem. v.29 no.11 Reaction Kinetics in Differential Thermal Analysis H.E. Kissinger
  7. J. Inorg. Nucl. Chem. v.12 Initial Reaction Rates from DTA H.J Borchardt
  8. Nature v.201 Kinetic Parameters from Thermogravimetric Data A.W. Coats;J.P. Redfem
  9. Polymer v.12 Kinetics of Non-isothermal Crystallization T. Ozawa
  10. J. Mat. Sci. v.10 Determination of the Activation Energy for Crystal Growth by Differential Thermal Analysis K. Matusita;S. Sakka;Y. Matsui
  11. Thermochimica Acta. v.25 Kinetics of Devitrification and Differential Thermal Analysis Alberto Marotta;Alberto Buri
  12. Trans. AIME(Am. Inst. Min. Engs.) v.135 Reaction Kinetics in Proceses of Nucleation and Growth W.A. Johnson;R.F. Mehl
  13. J. Chem. Phys. v.7 Kinetics of Phase Change I-General Theory M. Avrami
  14. J. Chem. Phys. v.8 Kinetics of Phase Change Ⅱ-Transformation-time Relations for Random Distribution of Nuclei M. Avrami
  15. J. Chem. Phys. v.9 Kinetics of Phase Change Ⅲ-granulation, Phase Change and Microstructure M.A vrami
  16. J Non-Crystal. Solids v.30 Thermal Analysis of Non-isothermal Crystallization Kinetics in Glass Forming Liquids Donald W. Henderson
  17. J. Non-Cryst. Solids v.54 Applications of Thermoanalyical Techniques to the Study of Crystallization Kinetics in Glass-forming Liquids, Part I : Theory H. Yinnon;D.R. Uhlmann
  18. J. Non-Cryst. Solids v.87 Non-isothermal Transformation Kinetics : Remarks on the Kissinger Method J.M. Criado;A. Ortega
  19. J. Non-Cryst. Solids v.38-39 Kinetic Study of Crystallization of Glass by Differential Thermal Analysis Criterion on Application of Kissinger Plot K. Matusita;Sumio Sakka
  20. Advanced in Ceramics v.4 Nucleation and Crystallization of$ LiO_2-2SiO_2$Glass-a DTA Study A. Marotta;A. Buri;F. Branda;S. Saiello;J.H. Simmons(ed.);D.R. Uhlmann(ed.);G.H. Beall(ed.)
  21. J. Am. Ceram. Soc. v.74 no.5 Nucleation and Crystallization of$Na_2O-2CaO-3SiO_2$Glass by Defferential Thermal Analysis Xiaojie J. Xu;Chandra S. Ray;Delbert E. Day
  22. J. Non-Cryst. Solids v.104 Experimental Test of the General Theory of Transformation Kinetics : Homogeneous Nucleation in a Na₂O-2CaO-3SiO₂Glass Edgar Dutra Zanotto;Antonio Galhardi
  23. J. Non-Cryst. Solids v.70 The Influence of Glass Composition on the Crystal Growth Kinetics of Heavy Metal Fluoride Glasses N.P. Bansal;A.J. Bruce;R.H. Doremus;C.T. Moynihan
  24. J. Am. Ceram. Soc. v.48 no.3 Nucleation and Growth of Lead Titanate from a Glass C.G. Burgeron;C.K. Russel
  25. J. Cryst. Growth. v.116 Kinetics of the Hydrothermal Crystallization of the Perovskite Lead Titanate G.A. Rossetti, Jr.;D. J. Watson;R.E. Newnham;J.H. Adair