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The formation of copper aluminate by solid-state reaction

Published online by Cambridge University Press:  31 January 2011

David W. Susnitzky  and
C. Barry Carter
David W. Susnitzky
Affiliation:
Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853
C. Barry Carter*
Affiliation:
Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853
*
b)Address correspondence to this author.
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Abstract

Solid-state reactions between bulk samples of copper oxide and alumina have been studied using scanning electron microscopy and electron microprobe analysis. Both CuAl2O4 and CuAlO2 were found to form during reactions in air at 1100 °C between CuO powder and single-crystal alumina substrates. The relative position of the CuAl2O4 and CuAlO2 layers was observed to depend on the crystallographic orientation of the surface of the alumina substrate: CuAl2O4 formed in contact with (0001) alumina substrates while CuAlO2 formed when the alumina substrate surface was (110). Faceted Cu–aluminate/alumina phase boundaries were observed to develop when single-crystal alumina rods were reacted with CuO, although the interfaces invariably tended to be wavy.

Type
Articles
Information
Journal of Materials Research , Volume 6 , Issue 9 , September 1991 , pp. 1958 - 1963
Copyright
Copyright © Materials Research Society 1991

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