Chapter 14. Investigation of a Novel Air Brazing Composition for High-Temperature, Oxidation-Resistant Ceramic Joining

  1. Edgar Lara-Curzio and
  2. Michael J. Readey
  1. K. Scott Weil1,
  2. John S. Hardy1 and
  3. Jens Darsell2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291184.ch14

28th International Conference on Advanced Ceramics and Composites A: Ceramic Engineering and Science Proceedings, Volume 25, Issue 3

28th International Conference on Advanced Ceramics and Composites A: Ceramic Engineering and Science Proceedings, Volume 25, Issue 3

How to Cite

Weil, K. S., Hardy, J. S. and Darsell, J. (2004) Investigation of a Novel Air Brazing Composition for High-Temperature, Oxidation-Resistant Ceramic Joining, in 28th International Conference on Advanced Ceramics and Composites A: Ceramic Engineering and Science Proceedings, Volume 25, Issue 3 (eds E. Lara-Curzio and M. J. Readey), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291184.ch14

Author Information

  1. 1

    Pacific Northwest National Laboratory P.O. Box 999 Richland, WA 99352

  2. 2

    School of Mechanical and Materials Engineering Washington State University Pullman, WA 99164–2920

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2004

ISBN Information

Print ISBN: 9780470051498

Online ISBN: 9780470291184

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Keywords:

  • EDX;
  • CUO;
  • U.S d.O.E.;
  • polycrystalline alumina;
  • ulead systems

Summary

One of the challenges in developing a useful ceramic joining technique is in producing a joint that offers good strength under high temperature and highly oxidizing operating conditions. Unfortunately many of the commercially available active metal ceramic brazing alloys exhibit oxidation behaviors which are unacceptable for use in a high temperature application. We have developed a new approach to ceramic brazing, referred to as air brazing, that employs an oxide wetting agent dissolved in a molten noble metal solvent, in this case CuO in Ag, such that acceptable wetting behavior occurs on a number of ceramic substrates. in an effort to explore how to increase the operating temperature of this type of braze, we have investigated the effect of ternary palladium additions on the wetting characteristics of our standard Ag-CuO air braze composition.