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Compatibility of Potential Reinforcing Ceramics with Ni and Fe Aluminides

Published online by Cambridge University Press:  21 February 2011

J. A. Moser ,
M. Aindow ,
W. A. T. Clark ,
S. Drapert  and
H. L. Fraser
J. A. Moser
Affiliation:
Dept. of Materials Science & Engineering, The Ohio State University, Columbus, OH 43210.
M. Aindow
Affiliation:
Dept. of Materials Science & Engineering, The Ohio State University, Columbus, OH 43210.
W. A. T. Clark
Affiliation:
Dept. of Materials Science & Engineering, The Ohio State University, Columbus, OH 43210.
S. Drapert
Affiliation:
NASA-Lewis Research Center, Cleveland, OH 44135.
H. L. Fraser
Affiliation:
Dept. of Materials Science & Engineering, The Ohio State University, Columbus, OH 43210.
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Abstract

The compatibility of candidate ceramic reinforcement materials with intermetallic matrices for high temperature composite systems has been evaluated. Powders of FeAl and NiAl were mixed with ceramic powders and consolidated by hot isostatic pressing and subsequent heat treatment. The microstructures of these composites and the nature of the ceramic/matrix interfaces were assessed using a wide variety of electron-beam techniques. The system FeAl/TiB2 was found to be particularly promising. The matrix appears to be bonded to the ceramic particles, which may be the result of diffusion of Fe into the ceramic. The particles stabilized in a previously unreported monoclinic crystal structure, rather than the equilibrium hexagonal form exhibited by the binary compound.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 194: Symposium R – Intermetallic Matrix Composites I , 1990 , 379
Copyright
Copyright © Materials Research Society 1990

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