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The effect of Al2O3 on the isokom temperatures in soda-lime glass

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2022, 32(3), pp.103-106
  • DOI : 10.6111/JKCGCT.2022.32.3.103
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : May 17, 2022
  • Accepted : June 2, 2022
  • Published : June 30, 2022

Kang, Seung-Min 1 Chang-Sam Kim 1

1한서대학교

Accredited

ABSTRACT

The effect of Al2O3 on isokom temperatures in soda-lime glass is estimated by comparing calculated isokom temperatures using viscosity model proposed by Lakatos. Substitution of SiO2 with Al2O3 by 0.5 mol% raises the isokom temperatures by 3.1, 3.3, 3.6 and 7.2°C at the viscosity of log η = 12.3, 10, 6.6 and 1 (Pa·s), respectively. Meanwhile, replacing 0.5 mol% of CaO with Al2O3 raises the isokom temperatures by 1.6, 2.3, 4.1 and 17.7°C at the viscosity of log η = 12.3, 10, 6.6 and 1 (Pa·s), respectively.

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