2. Effect of Zinc Oxide Addition on Crystallization Behavior and Mechanical Properties of a Porcelain Body

  1. William M. Carty
  1. S.-K. Kim,
  2. S.-M. Lee,
  3. E.-S. Choi and
  4. H.-T. Kim

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291177.ch2

Whitewares and Materials: Ceramic Engineering and Science Proceedings, Volume 25, Issue 2

Whitewares and Materials: Ceramic Engineering and Science Proceedings, Volume 25, Issue 2

How to Cite

Kim, S.-K., Lee, S.-M., Choi, E.-S. and Kim, H.-T. (2004) Effect of Zinc Oxide Addition on Crystallization Behavior and Mechanical Properties of a Porcelain Body, in Whitewares and Materials: Ceramic Engineering and Science Proceedings, Volume 25, Issue 2 (ed W. M. Carty), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291177.ch2

Author Information

  1. Pottery/Structural Ceramics Center, Korea Institute of Ceramic Engineering and Technology, Seoul, Korea

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2004

ISBN Information

Print ISBN: 9780470051474

Online ISBN: 9780470291177

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Keywords:

  • zinc oxide addition;
  • mechanical properties;
  • artistic works;
  • crystalline glazes;
  • willemite crystal

Summary

The effect of ZnO addition on crystallization behavior and mechanical properties of porcelain body has been investigated. As ZnO content increased, gahnite (ZnAl2O4) phase developed and cristobalite formation was promoted. However, alumina added as a raw material remained almost intact during sintering. The gahnite crystallized from 1130°C, after feldspar was significantly melted and ZnO dissolved into the glass. After sintering, abundant gahnite crystals with sizes of 50–400 nm were homogenously distributed inside glass phase. With increases in ZnO content and sintering temperature, water absorption decreased and flexural strength improved. The strength relies on ZnO content rather than water absorption. Wear resistance was enhanced with ZnO content.