Chapter 64. Net-Shape Manufacture of Low-Cost Ceramic Shapes by Freeze-Gelation

  1. Don Bray
  1. M. J. Statham1,
  2. F. Hammett1,
  3. B. Hanis1,
  4. R. G. Cooke1,
  5. R. M. Jordan2 and
  6. A. Roche2

Published Online: 23 MAR 2010

DOI: 10.1002/9780470294499.ch64

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 19, Issue 4

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 19, Issue 4

How to Cite

Statham, M. J., Hammett, F., Hanis, B., Cooke, R. G., Jordan, R. M. and Roche, A. (1998) Net-Shape Manufacture of Low-Cost Ceramic Shapes by Freeze-Gelation, in 22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 19, Issue 4 (ed D. Bray), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294499.ch64

Author Information

  1. 1

    School of Materials Science and Engineering, University of Bath, Bath, Somerset BA2 7 AY, UK

  2. 2

    SDL, Singleton Park, Swansea S A2 8PP, UK

Publication History

  1. Published Online: 23 MAR 2010
  2. Published Print: 1 JAN 1998

ISBN Information

Print ISBN: 9780470375594

Online ISBN: 9780470294499

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Keywords:

  • Ti-alkoxides;
  • nanoscale;
  • organometallic;
  • heterometallic;
  • alumina

Summary

The freezing of colloidal silica sols — a process known as freeze-gelation, or freeze-casting — offers a route for the manufacture of low-cost ceramics of complex shape which is a useful alternative to conventional ceramic manufacturing methods. Freeze-gelation, unlike the more conventional alkoxide or colloidal sol-gel techniques, is a simple and economical process which can be employed to produce porous, crack-free, near-net-shape ceramic bodies of considerable size. This paper presents the results of an investigation into the effects of process and compositional variables on the microstructure and properties of ceramics manufactured by this process.