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Microstructure evolution during sintering of self-propagating high-temperature synthesis produced ZrB2 powder

Published online by Cambridge University Press:  31 January 2011

S. K. Mishra ,
S. Das  and
P. Ramchandrarao
S. K. Mishra
Affiliation:
National Metallurgical Laboratory, Jamshedpur-831 007, India
S. Das
Affiliation:
National Metallurgical Laboratory, Jamshedpur-831 007, India
P. Ramchandrarao
Affiliation:
National Metallurgical Laboratory, Jamshedpur-831 007, India
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Abstract

A transmission electron microscopy investigation on the microstructure evolution of the sintered compact of zirconium diboride was carried out. Grain boundary phases, structure, and morphology of the grains and defect structures were studied to understand the sintering behavior of these borides. The impurities, such as Fe, were found to stay at the triple junction point as (Fe, Zr)2B. Different types of defect structures, such as dislocations, twins, and faceted growth, were observed. No diffusion of Fe into ZrB2 could be observed, but the Zr diffusion into Fe was established.

Type
Articles
Information
Journal of Materials Research , Volume 17 , Issue 11 , November 2002 , pp. 2809 - 2814
Copyright
Copyright © Materials Research Society 2002

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References

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