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Microstructure and Properties of MoSi2/Nb Interfaces with and Without Alumina Coating

Published online by Cambridge University Press:  25 February 2011

L. Xiao  and
R. Abbaschian
L. Xiao
Affiliation:
Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611
R. Abbaschian
Affiliation:
Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611
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Abstract

This study explores the relations between processing routes, microstructures and mechanical properties of the matrix/reinforcement interfaces in MoSi2/Nb composites. It was found that the fracture energy of the interfacial region depended on the interfacial bond strength, roughness of interface, and the nature of the interfacial compounds. The fracture energy between the oxide coating and intermetallic interfacial compounds was found to be lower than that between two intermetallics or between Nb and an intermetallic. Processing routes were found to affect the fracture energy of the interfacial region by changing interphase formation, changing microstructure of materials adjacent to the interface, or changing roughness of interface.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 238: Symposium Cb – Structure and Properties of Interfaces in Materials , 1991 , 567
Copyright
Copyright © Materials Research Society 1992

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References

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