Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Phase Separation and their Structures in $BaO-B_2O_3$ Glasses

$BaO-B_2O_3$계 유리의 상분리 현상과 유리의 구조

  • 채수철 (인하대학교 무기재료공학과) ;
  • 김철영 (인하대학교 무기재료공학과)
  • Published : 1986.06.01
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Abstract

Phase spearated glass is heterogeneous in microscopic point of view and the heterogeneities affect the structures of glasses. In the present work the phase separation of $BaO-B_2O_3$ glass system was investigated and the effect of $P_2O_5$ on the phase separation and crystallization was also studied in the above system. Experiments such as scanning electron microscopy X-ray diffraction and infrared spectroscopy were performed. Phase separation with $B_2O_3$ rich phase matrix and BaO rich phase droplet was observed for the glasses containing less than 6 mole% of BaO while the opposite morphology of phase separation was found for the glasses containing more than 7 mole% of BaO. Phase separation region was extended up to the glass with 22mole% of BaO when the amount of $P_2O_5$ was increased. The heat-treated glasses crystallized to BaO.$4B_2O_3$$P_2O_5$ hindered the glass from the crystalli-zation.

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References

  1. J. Am. Ceram. Soc. v.23 no.10 Atomic Consideration of Immiscibility in Glass Systems B.E. Warren;A.G. Pincus
  2. Introduction to Glass Science Phase Separation of Simple Glasses Von A. Dietzel;S.D. Pye(ed.);H.J. Stevens(ed.);W.C. Lacourse(ed.)
  3. Phys. Chem. Glasses v.6 no.5 The Initial Stages of Phase Separation in Glasses J.W. Cahn;R.J. Charles
  4. J. Non-Cryst. Solids v.21 Effects of Phase Separation on Crystallization Behavior G.W. Scherer;D.R. Uhlmann
  5. Phys. Chem. Glasses v.3 no.6 An X-ray Study of Barium Borate Glasses J. Krogh-Moe
  6. J. Am. Ceram. Soc. v.56 no.7 Effect of Minor Third Components on Metastable Immiscibility Boundaries of Binary Glasses Minoru Tomozawa;Richard A. Obara
  7. Phys. Chem. Glasses v.13 no.8 Effect of Third Component upon the Immiscibility of Binary Glass K. Nakagawa;T. Izumitani
  8. Phys. Chem. Glasses v.11 no.3 Quantitative Measurements of Phase Separation in Glasses using Transmission Electron Microscopy.;Part 2. A Study of Lithia-Silica Glasses and the Influence of Phosphorus Pentoxide P.F. James;P.W. McMillan
  9. Phys. Chem. Glasses v.6 no.2 Phase Separation and Crystallisation in $Li_2O-SiO_2\;and\;Li_2O-SiO_2-P_2O_5$ Glasses S.V. Phillips;P.W. McMillan
  10. Phys. Chem. Glasses v.15 no.4 Effect of Added Oxides on the Crystallisation and Phase Separation of $Li_2O\cdot3SiO_2$ Glasses Kazumasa Matusita;Toshio Maki;Megumi Tashiro
  11. 한국요업학회지 v.22 no.4 $PbO-B_2O_3$계 유리의 상분리에 미치는 $P_2O_5$의 영향 최춘식;김철영
  12. J. Am. Ceram. Soc. v.32 no.3 The System BaO-B₂O₃ Ernest M. Levin;Howard F. McMurdie
  13. Phys. Chem. Glasses v.20 no.6 The Region of Liquid Immscibility in the System B₂O₃-BaO V.B.M. Hageman;H.A.J. Oonk
  14. J. Am. Ceram. Soc. v.64 no.6 Liquid-Liquid Immiscibility in BaO-B₂O₃ M. Tomozawa;K. Clemens;M. Yoshiyagawa
  15. Joint Committe on Powder Diffraction Standards: Card No.6-0277 Penn.
  16. J. Am. Ceram. Soc. v.55 no.8 Secondary Phase Separation in Lead Borate Glasses R.R. Shaw;J.F. Breedis
  17. J. Am. Ceram. Soc. v.46 no.5 Some Structural and Electrical Properties of Lithium Silicate Glasses R.J. Charles
  18. Phys. Chem. Glasses v.14 no.4 Liquid Phase Separation and Crystal Growth in Li₂O-SiO₂ Glass M. Tomozawa
  19. Philips Res.Repts.Suppl. no.1 The Structure of Borosilicate Glasses W.L. Konijnendijk
  20. Glass Structure by Spectroscopy J. Wang;C.A. Angell
  21. Introduction to the Physical Chemistry of the Vitreous State The Structure of Glasses D. Balta;E. Balta
  22. J. Phys. Chem. v.70 no.2 The Infrared Spectra of Rubidium Borates of Varying Composition J.T. Quan;C.E. Adams