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Journal of Materials Science

, Volume 43, Issue 2, pp 483–488 | Cite as

Modeling of glass sintering applied for the fabrication of porous glass bodies

  • Suelen Barg
  • Dietmar Koch
  • Maxim Pulkin
  • Georg Grathwohl
Article

Abstract

The sintering behavior of borosilicate and soda-lime mono-sized glass beads was investigated with the aim to fabricate transparent porous glass balls and cylinders. As the glasses tend to crystallize, temperatures where the sintering was in advantage compared to crystallization were used. Isothermal studies were undertaken for modeling the evolution of sintering necks as a function of radii of beads, temperature and time. The Frenkel model of viscous flow was applied to predict first and second stage of sintering. As the sintering of the glasses without crystallization was only possible at high temperatures the process is very fast and has to be controlled precisely. The results of this work were applied for the fabrication of porous bodies with specific characteristics: different geometries and sizes, transparency, high porosities to be achieved during first stage sintering of spherical glass beads. The porous parts with these characteristics are used for the investigation of hydrodynamic processes in the pore network of glass parts.

Keywords

Glass Bead Viscous Flow Tangential Contact Neck Size Stage Sinter 
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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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Suelen Barg
    • 1
  • Dietmar Koch
    • 1
  • Maxim Pulkin
    • 1
  • Georg Grathwohl
    • 1
  1. 1.Ceramics- Keramische Werkstoffe und BauteileUniversity of BremenBremenGermany

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