Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Crystallization and Transparency of $Li_2O$.$2SiO_2$ Glass-Ceramics

$Li_2O$.$2SiO_2$. 유리의 결정화와 투광성에 관한 연구

  • Published : 1990.04.01
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Abstract

Li2O.2SiO2 glass-ceramics were made from the melt by the nucleation and growth treatment. The optimum nucleation temperature and time were determined from DTA curves of as-quenched and thermally treated glasses, and found to be 44$0^{\circ}C$ and 3hrs. The optical microscopic technique was also used to support this result. The volume fractions of crystals present in the partially crystallized specimens were measured using the optical microscopy and the amorphous X-ray scattering methods. The degree of crystallization increased with increasing the crystallization temperature and time. The crystalline phase identified by X-ray diffraction was lithium disilicate. As the crystallinity increased up to 95%, the transmittance of glass-ceramics was decreased linearly. It was also found that for the same heat treatment condition (575$^{\circ}C$, 30min), a thicker specimen showed higher transmittance, presumably due to less crystallinity.

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References

  1. J. Am. Ceram. Soc. v.45 no.1 Further Studies of the Crystallization of a Lithium Silicate Glass Guy E. Rindone
  2. J. Am. Ceram. Soc. v.51 no.7 Kinetics of Crystallization in Li₂O · SiO₂Glasses S.W. Freiman;L.L. Hench
  3. Phys. Chem. Glasses v.15 no.4 Kinetics of Crystal Nucleation in Lithium Silicate Glasses P.F. James
  4. Phys. Chem. Glasses v.14 no.6 Liquid Phase Separation and Crystal Growth in Li₂O · SiO₂Glasss M. Tomozawa
  5. J. Mat. Sci. v.10 Study on Crystallization of Glass by Differential Thermal Analysis;Effect of Added Oxide on Crystallization of Li₂O· SiO₂ Glasses K. Matusita;S. Sakka
  6. J. Am. Ceram. Soc. v.44 no.10 Study of Devitrification of Lithium Glass R.J. Jaccodine
  7. Phys. Chem. Galsses. v.14 no.4 Effect of Added Oxides on the Crystalization of Li₂O· 2SiO ₂Glasses K. Matusita;M. Tashiro
  8. Ibid v.20 no.4 The Crystallization Kinetics of Li₂O· SiO₂Glasses Studied by Amorphous X-ray Scattering V. Komppa
  9. The Scientific Papers of Prof. M. Tashiro and His Collaborators v.1;2 M. Tashiro
  10. Phys. Chem. Glasses v.10 no.5 Relationship Between Phase Separation and Crystallization in Li₂O· 2.5SiO₂Glass a Lithium Silicate Containing a Large Amount of Titanium Oxide K. Nakagawa;T. Izumitani
  11. Phys. Chem. Glasses v.12 no.2 The Early Stages of Crystallization in a Li₂O· 2SiO₂Glass L.L. Hench(et al.)
  12. J. Non-Crystalline Solids v.29 Crystallozation and Phase Separation of Li₂O-SiO₂Glass P. Hautojarv(et al.)
  13. J. Kor. Ceram. Soc. v.26 no.5 Scoria 유리 (CaO·MgO·Al₂·O₃·SiO₂계)의 결정화에 미치는 $Fe^{2+}/Fe^{3+}$비 효과 최병현;지응업
  14. J. Japan Ceram. Soc. The Effect of Additives (Sucrose, CaO, MgO and SiO₂) on the Crystallization and Physical Properties of the Scoria Melt Byung-Hyun Choi;Kunio Kimura;Ung-Up Chi
  15. J. Am. Ceram. Soc. v.45 Determination of Percent Crystallinity of Partly Devitrified Glass by X-ray Diffraction S.M. Ohlberg;D.W. Strickler
  16. 工業化學雜誌 v.67 no.6 リチアケイ酸ガラスの結晶化の硏究 松田二郞;水渡英二
  17. J. Am. Ceram. Soc. v.47 no.6 Electron Microscopic Technique for Determining the Percent Crystallinity of Glass-Ceramic Materials G.B. Carrier
  18. J. Mat. Sci. v.16 Nucleation in Glass and Difference Thermal Analysis A. Marotta(et al.)
  19. Thermochimica Acta v.40 Surface and Bulk Crystallization in Non-Isothermal Devitrification of Glasses A. Marotta(et al.)
  20. Thermochimica Acta v.25 Kinetics of Devitrification and Differential Thermal Analysis A. Marotta;A. Buri
  21. J. Non-Crystal. Solids v.38;39 Kinetics Study on Crystallization of Glass by Differential Thermal Analysis-Criterion on Application of Kissinger Plot K. Matusita;S. Sakka
  22. Trans. Met. Soc. AIME v.224 The Determination of the Size Distribution of Ellipsoidal particles from Measurements Made on Random Plane Sections R.T. DeHoff
  23. Trans. Met. Soc. AIME v.223 The Estimation of Particle-Size Distribution from Simple Counting Measurements Made on Random Plane Sections R.T. DeHoff
  24. Quantitative Stereology Ervin E. Underwood
  25. ガラス工學ハドプシワ 森谷太郞(外 3人)
  26. ガラスの化學 土橋正二