Chapter 20. Low-Cost Processing of Fine Grained Transparent Yttrium Aluminum Garnet

  1. Edgar Lara-Curzio and
  2. Michael J. Readey
  1. Heedong Lee,
  2. Tai-Il Mah and
  3. Triplicane A. Parthasarathy

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291184.ch20

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

Lee, H., Mah, T.-I. and Parthasarathy, T. A. (2004) Low-Cost Processing of Fine Grained Transparent Yttrium Aluminum Garnet, 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.ch20

Author Information

  1. UES, Inc. 4401 Dayton-Xenia Rd. Dayton, Ohio 45432, U.S.A.

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:

  • YAG;
  • SEM;
  • XRD;
  • IR transmittance;
  • PEG

Summary

Transparent polycrystalline yttrium aluminum garnet (YAG) with a fine grain size (1∼2 μm) was produced via a sinter-HIP process using highly reactive nano-sized powders that were synthesized by partial and full combustion processes at 200° — 240°C. the primary particle size was estimated to be between 30 — 50 nm, and the powders appeared to be weakly agglomerated. the densities after sintering at 1550° — 1650°C were 95.0 — 99.0 % of the theoretical density and the samples appeared translucent. Further HIPing at temperatures between 1500° and 1550°C resulted in completely dense polycrystalline YAG that showed a visibly higher transparency that was comparable to a single crystal YAG. the details of microstrucrural characterization (SEM), phase identification (XRD), and visible and IR transmittance (Spectrophotometer) are presented.