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Nanoprobe analysis of core–rim structure of carbides in TiC–20 wt% Mo2C–20 wt% Ni cermet

Published online by Cambridge University Press:  31 January 2011

T. Yamamoto ,
A. Jaroenworaluck ,
Y. Ikuhara  and
T. Sakuma
T. Yamamoto
Affiliation:
Department of Materials Science, The University of Tokyo, 7–3–1, Hongo, Bunkyo-ku, Tokyo 113, Japan
A. Jaroenworaluck
Affiliation:
Department of Materials Science, The University of Tokyo, 7–3–1, Hongo, Bunkyo-ku, Tokyo 113, Japan
Y. Ikuhara
Affiliation:
Department of Materials Science, The University of Tokyo, 7–3–1, Hongo, Bunkyo-ku, Tokyo 113, Japan
T. Sakuma
Affiliation:
Department of Materials Science, The University of Tokyo, 7–3–1, Hongo, Bunkyo-ku, Tokyo 113, Japan
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Abstract

In order to get detailed information of the core–rim interface of carbides in TiC–20 wt% Mo2C–20 wt% cermet, chemical analysis in the vicinity of the interface was carried out by energy dispersive x-ray spectroscopy equipped with a high-resolution transmission electron microscope (HRTEM) with a field-emission-type gun. It was found that the chemical composition discretely changed across the core–rim interface at a nanoscale level, whereas HRTEM observation revealed that the interface is highly coherent. The discrete change in molybdenum content at the interface may suggest the existence of a miscibility gap between TiC and MoC systems at the sintering temperature.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 14 , Issue 11 , November 1999 , pp. 4129 - 4131
Copyright
Copyright © Materials Research Society 1999

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References

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