Chapter 36. Functionally Gradient Nial/Al2O3 Structures
- John B. Wachtman Jr.
Published Online: 26 MAR 2008
Copyright © 1992 The American Ceramic Society
Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 7/8
How to Cite
Miller, D. P., Lannutti, J. J. and Yancey, R. N. (1994) Functionally Gradient Nial/Al2O3 Structures, in Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313954.ch36
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1994
Print ISBN: 9780470375174
Online ISBN: 9780470313954
Functionally gradient NiAl/alumina structures have been produced by sedimentation in organic solvents. Computed tomography (CT) characterized density and compositional gradients within the composites both during and after formation. Gradient severity was controlled by the presence of a specific additive which is completely removed prior to densification; we were able to eliminate phase separation during multi-compositional multilayer formation in spite of considerable differences in powder density and morphology. Variation of the initial alumina particle size also allowed for significant control of the final fired microstructure(s). Characterization of hot-pressed composite mechanical properties was also carried out.