Chapter 10. Texture Development in Reaction-Bonded Alumina (Rbao) Ceramics Via Templated Grain Growth
- Todd Jessen,
- Ersan Ustundag
Published Online: 28 MAR 2008
DOI: 10.1002/9780470294635.ch10
Copyright © 2000 The American Ceramic Society
Book Title
24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4
Additional Information
How to Cite
Suvaci, E. and Messing, G. L. (2008) Texture Development in Reaction-Bonded Alumina (Rbao) Ceramics Via Templated Grain Growth, in 24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4 (eds T. Jessen and E. Ustundag), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294635.ch10
Publication History
- Published Online: 28 MAR 2008
- Published Print: 1 JAN 2000
Book Series:
ISBN Information
Print ISBN: 9780470375693
Online ISBN: 9780470294635
- Summary
- Chapter
- References
Keywords:
- liquid phase sintering;
- templated grain growth;
- crystallographic;
- oriented equiaxed grains
Summary
Texture development in liquid-phase sintered RBAO ceramics has been studied during templated grain growth (TGG): a technique for developing crystallographic texture in ceramic bodies via the grain growth of aligned non- equiaxed particles in a dense and fine grain size matrix. The process of TGG occurs in 3 stages: densification, initial growth of individual template particles and template impingement and template thickening. To understand texture development in RBAO ceramics during each stage of TGG, we have performed a series of experiments to isolate the growth of an individual grain. Experiments with samples containing low template (∼1 vol%) concentration at 1450°C showed that the radial growth of platelets is rapid and controlled by diffusion, whereas growth perpendicular to the basal surface is controlled by nucleation.