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Journal of Materials Science

, Volume 14, Issue 11, pp 2581–2588 | Cite as

Glass workability study and correlation of melting history, microstructure, apparent liquidus temperature, and mechanical strength

  • Henry S. -Y. Hsich
Papers

Abstract

The glass workability during the forming process has been discussed from the aspects of rheology, heat transfer, and microstructure. The rheological behaviour and heat-transfer characteristic of glass determine the workability of glass. However, the accidentally caused changes of glass structure during melting, fining and forming can affect the workability; therefore, the apparent liquidus temperature and crystal structure of bad workability glass have been studied and compared with the good workability glass. It is found that the apparent liquidus temperature study seems to be an effective method for determining the good and bad workability glasses. The results from the mechanical strengths study of the good workability glass shows evidence of microvoids of the order of 400 Å existing in the glass structure. However, there is no such evidence in the bad workability glass; therefore, it is believed that a large flaw size, or stress concentration around the inclusions existed in the bad workability glass.

Keywords

Polymer Microstructure Heat Transfer Crystal Structure Mechanical Strength 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    H. S. -Y. Hsich, “Rheology in Glass Forming and Polymer Processing”, to be published.Google Scholar
  2. 2.
    “Effect of Volume Relaxation on Heat Transfer during Glass Molding Operations”, to be published.Google Scholar
  3. 3.
    J. P. Poole,Glass Ind. 48 (1967) 129.Google Scholar
  4. 4.
    R. J. Ryder,Brockway Glass Co, Inc, Library Report 25 (7) (1974).Google Scholar
  5. 5.
    W. A. Weyl andE. C. Marboe, “Determination of the Mechanism of Fining and Homogenizing Container Glasses”, GCIRC Research Report (1974).Google Scholar
  6. 6.
    Idem, “Methods of Increasing the Rate of Homogenizing Glasses”, GCIRC Research Report (1974).Google Scholar
  7. 7.
    Idem, “A New Interpretation of the Behavior of Materials under Stress”, GCIRC Research Report (1971).Google Scholar
  8. 8.
    H. S. -Y. Hsich,J. Mater. Sci. 13 (1978) 2560.Google Scholar
  9. 9.
    Idem, J. Amer. Ceram. Soc. 60 (11, 12) (1977) 485.Google Scholar
  10. 10.
    Idem, J. Mater. Sci. 13 (1978) 750.Google Scholar
  11. 11.
    A. J. Holland andE. Preston,J. Glass Tech. 22 (1938) 22.Google Scholar
  12. 12.
    H. Rawson, “Inorganic Glass-Forming System” (Academic Press, London, New York, 1967) 88 pp.Google Scholar
  13. 13.
    A. N. Winchell, “Elements of Optical Mineralogy”, New York, 1951) 250 pp.Google Scholar
  14. 14.
    J. J. Noble, L. A. Clomburg, H. C. Hottel andA. F. Sarofim, ASME Winter Annual Meeting, 29 November to 3 December (1970).Google Scholar
  15. 15.
    R. L. Curran, IEEE IGA Conference (1970).Google Scholar
  16. 16.
    F. M. Ernsberger,Glass Ind. 47 (1966) 422.Google Scholar
  17. 17.
    B. A. Proctor,Appl. Mat. Res. 3 (1964) 28.Google Scholar
  18. 18.
    S. M. Weiderhorn,J. Amer. Ceram. Soc. 52 (2) (1969) 99.Google Scholar
  19. 19.
    L. S. Zborzhil, S. Ainbinders, V. I. Betekhpin, A. I. Slutsker, K. Alksne, A. I. Petrov andA. Dzenis,Polymer Mech. (Russian Original)7 (1971) 817.Google Scholar
  20. 20.
    I. Simon, “Modern Aspects of the Vitreous State”, Vol. I (Butterworth, Washington D.C., 1960) p. 120.Google Scholar
  21. 21.
    S. A. Brawer andW. B. White,J. Chem. Phys. 63 (1975) 2421.Google Scholar
  22. 22.
    W. L. Konignendijk andI. M. Stevels,J. Non-Cryst. Solids 21 (1976) 447.Google Scholar
  23. 23.
    J. Etchepare,Spectrochim. Acta A 26 (1969) 2147.Google Scholar
  24. 24.
    H. Verweij andW. L. Konijnendijk,J. Amer. Ceram. Soc. 59 (1976) 517.Google Scholar
  25. 25.
    W. L. Konijnendijk andJ. M. Stevels,J. Non-Cryst. Solids 21 (1976) 447.Google Scholar

Copyright information

© Chapman and Hall Ltd. 1979

Authors and Affiliations

  • Henry S. -Y. Hsich
    • 1
  1. 1.Engineering and Research CenterBrockway Glass Company, IncBrockwayUSA

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