Chapter 31. Deposition Kinetics in Forced Flow/Thermal Gradient CVI

  1. John B. Wachtman Jr.
  1. Thomas L. Starr

Published Online: 28 MAR 2008

DOI: 10.1002/9780470310496.ch31

Proceedings of the 12th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 9, Issue 7/8

Proceedings of the 12th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 9, Issue 7/8

How to Cite

Starr, T. L. (1988) Deposition Kinetics in Forced Flow/Thermal Gradient CVI, in Proceedings of the 12th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 9, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470310496.ch31

Author Information

  1. Georgia Tech Research Institute Georgia Institute of Technology Atlanta, GA 30332

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1988

ISBN Information

Print ISBN: 9780470374801

Online ISBN: 9780470310496

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Keywords:

  • ceramic;
  • degradation;
  • thermal expansion;
  • characterization;
  • homogeneous

Summary

Forced flow/thermal gradient chemical vapor infiltration (CVI) can produce high quality ceramic composites with dramatically improved processing times. An analytical model developed for this process shows good agreement with experimental studies. The model reveals an interdependency between flow rate and temperature gradient that determines the deposition profile through the composite and the overall deposition rate. Proper balancing of these parameters produces nearly uniform deposition through the thickness of the composite, rapid densification, and efficient reagent utilization.