42. Aluminum Air Brazing for Joining Ceramics

  1. Dongming Zhu and
  2. Kevin Plucknett
  1. Jin Yong Kim,
  2. John S. Hardy and
  3. K. Scott Weil

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291238.ch42

Advances in Ceramic Coatings and Ceramic-Metal Systems: Ceramic Engineering and Science Proceedings, Volume 26, Number 3

Advances in Ceramic Coatings and Ceramic-Metal Systems: Ceramic Engineering and Science Proceedings, Volume 26, Number 3

How to Cite

Kim, J. Y., Hardy, J. S. and Weil, K. S. (2005) Aluminum Air Brazing for Joining Ceramics, in Advances in Ceramic Coatings and Ceramic-Metal Systems: Ceramic Engineering and Science Proceedings, Volume 26, Number 3 (eds D. Zhu and K. Plucknett), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291238.ch42

Author Information

  1. Pacific Northwest National Laboratory 902 Battelle Blvd, PO Box 999 Richland, WA, 99352

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2005

ISBN Information

Print ISBN: 9781574982336

Online ISBN: 9780470291238

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Keywords:

  • aluminum;
  • atmospheres;
  • molten;
  • polycrystalline;
  • microscope

Summary

Aluminum foils were used to braze ceramic plates directly in air. Since aluminum forms an inert oxide layer, aluminum air brazing can provide significant benefits in ceramic joining such as chemical tolerance in dual atmospheres. In using aluminum to air braze, the key factor is optimizing the brazing conditions in order to obtain a good interface between braze and substrates by controling the kinetics of melting and oxidation of aluminum and sintering of the oxide scale. In this study, joint strength was found to be largely dependent on brazing conditions such as temperature and hold time. Effects of these conditions on the mechanical properties and the microstructure of the Al-brazed ceramic joints will be discussed in this paper.