21. Synthesis of Titanium Aluminate-Alumina Compositions for Low TEC Applications

  1. Edgar Lara-Curzio
  1. James A. Geodakyan1,
  2. Aram K. Kostanyan1,
  3. Karen J. Geodakyan1 and
  4. W. Roger Cannon2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291221.ch21

Mechanical Properties and Performance of Engineering Ceramics and Composites: Ceramic Engineering and Science Proceedings, Volume 26, Number 2

Mechanical Properties and Performance of Engineering Ceramics and Composites: Ceramic Engineering and Science Proceedings, Volume 26, Number 2

How to Cite

Geodakyan, J. A., Kostanyan, A. K., Geodakyan, K. J. and Cannon, W. R. (2005) Synthesis of Titanium Aluminate-Alumina Compositions for Low TEC Applications, in Mechanical Properties and Performance of Engineering Ceramics and Composites: Ceramic Engineering and Science Proceedings, Volume 26, Number 2 (ed E. Lara-Curzio), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291221.ch21

Author Information

  1. 1

    Scientific-Research and Production Enterprise of Materials Science 17 Charents Str., Yerevan 375025, Republic of Armenia

  2. 2

    Rutgers State University of New Jersey 607 Taylor Rd., Piscataway, NJ 08854-8065, USA

Publication History

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

ISBN Information

Print ISBN: 9781574982329

Online ISBN: 9780470291221

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Keywords:

  • thermal shock resistance;
  • thermal expansion;
  • oak ridge national laboratory;
  • aluminum titanate;
  • re-crystallization

Summary

By choosing appropriate stabilizing additions and optimizing the thermal treatment, aluminum titanate with a low thermal expansion coefficient (TEC) (minus 3.38-10−6K−1 in the interval of 20 - 200°C) and hysteresis (0.07 % at 400°C) was obtained. The material was used as an additive for decreasing the TEC of alumina. Destructive thermal stresses were overcome by optimizing the milling and homogenization technique. The sintering rates, phase content and microstructure are described.