Chapter 80. Preparation Of Mullite Coated SiC Particulates as Precursors for Mullite-SiC Nanocomposites

  1. J. P. Singh
  1. U. S. Hareesh,
  2. G. M. Anilkumar,
  3. A. D. Damodaran and
  4. K. G. K. Warrier

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294444.ch80

Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 18, Issue 4

Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 18, Issue 4

How to Cite

Hareesh, U. S., Anilkumar, G. M., Damodaran, A. D. and Warrier, K. G. K. (1997) Preparation Of Mullite Coated SiC Particulates as Precursors for Mullite-SiC Nanocomposites, in Proceedings of the 21st Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 18, Issue 4 (ed J. P. Singh), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294444.ch80

Author Information

  1. Structural Ceramics Unit, Regional Research Laboratory (CSIR) Thiruvananthapuram-695019, Kerala, India

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1997

ISBN Information

Print ISBN: 9780470375532

Online ISBN: 9780470294444

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Keywords:

  • flocculation;
  • nanocomposites;
  • dispersoid;
  • homogeneous;
  • consolidated

Summary

Fine SiC particulates of size less than 0.3 μam were coated uniformly with mullite precursor by controlled hydrolysis of a mixture of boehmite and silica sols. SiC powders dispersed in TEOS-water mixture were first coated with hydrous silica followed by flocculation in boehmite sol. Coated powders on calcination at temperatures > 1250°C produced mullite coated SiC. Coatings were characterised by XRD and phase formation by thermal analysis techniques.