Chapter 54. Use of AIOOH Gel in Microwave Joining of Alumina

  1. John B. Wachtman Jr.
  1. Salwan Al-Assafi and
  2. David E. Clark

Published Online: 26 MAR 2008

DOI: 10.1002/9780470313978.ch54

Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10

Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10

How to Cite

Al-Assafi, S. and Clark, D. E. (1994) Use of AIOOH Gel in Microwave Joining of Alumina, in Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313978.ch54

Author Information

  1. Department of Materials Science and Engineering University of Florida Gainesville. FL 32611–2066

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1994

ISBN Information

Print ISBN: 9780470375198

Online ISBN: 9780470313978

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Keywords:

  • combustors;
  • siliconized;
  • thermal conductivity;
  • combustiona;
  • variability

Summary

Alumina gel was used in microwave joining of alumina ceramics. Both high purity and low purity alumina samples were joined successfully. Direct joining and joining with gel were both carried out and a comparison between the two types of joints was made. The effect of joining time, temperature, and gel concentration on the joining process was studied. The results showed that joint strength is highly dependent on joining temperature and time, and less dependent on gel concentration. SEM micrographs taken at the joint region showed that for specific joining conditions, the joint line was undetectable. Knoop microhardness Measurements showed joint microhardness higher than the microhardness of the as-received alumina.