Studies on the Glaze for High Expansion Glass Ceramics

고팽창 결정화 유리의 유약에 관한 연구

  • Published : 1980.04.01

Abstract

A glass-ceramics material of composition %SiO_2$: 38.50, $Al_2O_3$: 26.00, $Na_2O$: 18.00, CaO: 6.00, MgO: 4.00, $TiO_2$: 7.50 was strengthened by coating a series of glazes$(SiO_2-B_2O_3-Al_2O_3-CaO-PbO-Na_2O-)$, which has lower thermal expansion coefficient than that of the glass-ceramics. The thermal expansion coefficient of the glazes ranges $80~90{\times}10^{-7}$cm/cm/$^{\circ}C$, whereas that of the glass-ceramics is $115{\times}10^{-7}$cm/cm/$^{\circ}C$. The glass-ceramics was identified to be composed of nepheline, carnegieite low form, and meta sodium silicate crystal by X-ray diffraction phase analysis. The glaze, having lower melting point and appropriate thermal expansion coefficient, was tried to be stable and good at secondary heat treatment.

Keywords

References

  1. Journ of the Korean Ceram. Soc. v.16 no.1 Studies on the High Expansion body of Glass Ceramics Yong-Wan Park;Eun-Tae Kang;Yong-Hwan Kim
  2. J. Am. Ceram. Soc. v.50 no.2 Crystallization and Chemical Strengthening of Nepheline Glass-Ceramics D.A. Duck;J.F. MacDowell;B.R. Karstetter
  3. J. Am. Cer. Soc. v.51 no.2 Strengthening Glass-Ceramics by Application of Compressive Glazes D.A. Duck;J.E. Megles, Jr.;J.F. MacDowell;H.F. Bopp
  4. U.S. Patent 3,384,508
  5. U.S. Patent 3,434,817
  6. Jour of Material Sci. v.7 Mixed Crystallization Modes in Glass-Ceramic Enamel Douglas M. Mattox
  7. U.S. Patent 3,473,937
  8. Ind. Engl. Chem. v.51 Catalyzed Crystallization of Glass in Theory and Practice S.D. Stookey
  9. J. Am. Cer. Soc. v.49 no.11 Mechanical Properties of chemically Strengthened Glasses at High Temperatures M.J. Ketper;T.G. Scueri
  10. Japan Patent 昭47-16836
  11. Ber. Dt. Keram. Ges. v.47 Formation of an interlayer between the glaze and the body and changes in the glaze composition during the firing of porcelain H. Scholze;J. Muller;Hildebrandt
  12. Ber. Dt. Keram. Ges. v.47 Investigation on chemical hardening of glazes K. Groβkopf;H. Scholze
  13. Scientic-Res Inst. of Stra. Cerm. Translated from Steklo Keramika v.6 Crystallization of Zircon in High-Born Zircon Glazes O.S. Gium-Grzhimalio;K.K. Kvyatkovskaya;L.M. Savvateeva
  14. J. Am. Cer. Soc. v.62 no.5-6 Crystallization Mechanisms in Glass-Ceramics M.H. Lewis;J. Metcalf-Johansen;P.S. Bell
  15. U.S. Patent 3,667,926
  16. Reports Res. Lab. v.24 no.1 Glazes for Low Thermal Expansion, Lithia Ceramics and New Apparatus for Glazing Ryuichiro Takeda;Taizo Kato;Kunihau Matsumoto
  17. J. Am. Cer. Soc. v.47 no.5 Strengthening by Ion Exchange M.E. Nordberg;E.L. Mochel;H.M. Garfinkel;J.S. Olcott
  18. J. Am. Cer. Soc. v.255 The Nepheline Kalsilite System: Ⅰ J.V. Smith;O.F. Tuttle
  19. J. Am. Cer. Soc. v.256 The Nepheline Kalsilite System: Ⅱ O.F. Tuttle;J.V. Smith
  20. J. Am. Cer. Soc. v.254 The System Na₂O-Al₂O₃-SiO₂ J.F. Schaner;N.L. Bowen
  21. J. Am. Cer. Soc. v.48 no.8 Kinetics of the Anatase-Rutile Transformation R.D. Shannon;J.A. Pask