Chapter 3. Spinel Formation in the Nickel-Alumina System
- John B. Wachtman Jr.
Published Online: 26 MAR 2008
Copyright © 1989 The American Ceramic Society, Inc.
Proceedings of the International Forum on Structural Ceramics Joining: Ceramic Engineering and Science Proceedings, Volume 10, Issue 11/12
How to Cite
Betrabet, H. S., Reddy, S. N. S., Purushothaman, S. and Reimanis, I. (1989) Spinel Formation in the Nickel-Alumina System, in Proceedings of the International Forum on Structural Ceramics Joining: Ceramic Engineering and Science Proceedings, Volume 10, Issue 11/12 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470312568.ch3
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1989
Print ISBN: 9780470374887
Online ISBN: 9780470312568
- metal-ceramic couples;
- spinel phase;
- nickel-alumina interface;
Nickel-alumina metal-ceramic couples were heat treated under controlled partial pressure of oxygen to form a spinel phase at the interface. The oxygen partial pressure was chosen such that pure NiO was unstable and only the spinel phase was stable at the nickel-alumina interface. The morphology of the spinel phase at the interface was studied by examining cross sectional samples using transmission electron microscopy (TEM). The spinel was found to grow epitaxially on the single crystal alumina substrate. The orientation relationship between the spinel and the substrate was found to be controlled by the substrate orientation. The kinetics of spinel formation is briefly examined and will be discussed qualitatively.