Chapter 41. Coating of Fibers by Colloidal Techniques in Ceramic Composites

  1. John B. Wachtman Jr.
  1. S. G. Malghan,
  2. D. B. Minor,
  3. P. S. Wang and
  4. C. P. Ostertag

Published Online: 26 MAR 2008

DOI: 10.1002/9780470313053.ch41

14th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 11, Issue 9/10

14th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 11, Issue 9/10

How to Cite

Malghan, S. G., Minor, D. B., Wang, P. S. and Ostertag, C. P. (2008) Coating of Fibers by Colloidal Techniques in Ceramic Composites, in 14th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 11, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313053.ch41

Author Information

  1. Ceramics Division, National Institute of Standards and Technology, Gaithersburg, MD

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1990

ISBN Information

Print ISBN: 9780470374931

Online ISBN: 9780470313053

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Keywords:

  • alumina;
  • morphology;
  • composite;
  • chemical;
  • carbide

Summary

A process for coating silicon carbide fibers with alumina particulates for control of interface characteristics in the sintering of fiber-reinforced composites is described. The process is based on colloidal slurry processing techniques, in which the fibers are allowed to take up a positive surface charge, while the alumina particles are imparted a negative surface charge. When the oppositely charged fibers and particles are brought together, the particles deposit on the surface of the fibers. Some unique features of the process, as well as characteristics of the resultant coating are described. Process variables of the coating technique that control the coating morphology, thickness, and adherence to the fiber are examined.