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Journal of Materials Science

, Volume 27, Issue 6, pp 1575–1584 | Cite as

Liquid-phase sintering in the glass-cordierite system

  • Jau -Ho Jean
  • T. K. Gupta
Papers

Abstract

Densification mechanisms and kinetics of liquid-phase sintering were studied using borosilicate glass-cordierite as a model system. It is shown that the sintering behaviour can be represented predominantly by a non-reactive liquid-phase sintering and that the densification is achieved mainly in the initial stage of sintering. From the activation energy estimates of densification, it is concluded that the predominant mechanism of densification is the viscous flow of glass with contribution arising from both viscous sintering of glass and glass redistribution kinetics. The latter evidence stems from the microstructural observation that as the sintering proceeds, the glass undergoes a time-dependent wetting behaviour. Based on this observation, and calculated infiltration times of melt into the porous compact, it is found that the time-dependent contact angle between the melt and the solid particles plays a significant role in the glass redistribution process.

Keywords

Contact Angle Viscous Flow Energy Estimate Microstructural Observation Sinter Behaviour 
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

© Chapman & Hall 1992

Authors and Affiliations

  • Jau -Ho Jean
    • 1
  • T. K. Gupta
    • 1
  1. 1.Alcoa Technical Center, Alcoa CenterAlcoa Electronic Packaging, Inc.USA

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