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Characterizing The Microstructures Of TiN/TiB2 Nanocomposites With Energy Filtered Tem

Published online by Cambridge University Press:  25 February 2011

V. Szabo ,
M. RÜhle ,
K. Su ,
L.G. Sneddon  and
D. Bonnell
V. Szabo
Affiliation:
Max-Planck-Institut für Metallforschung, Stuttgart, Germany
M. RÜhle
Affiliation:
Max-Planck-Institut für Metallforschung, Stuttgart, Germany
K. Su
Affiliation:
Dept. of Chemistry, The University of Pennsylvania, Philadelphia, PA
L.G. Sneddon
Affiliation:
Dept. of Chemistry, The University of Pennsylvania, Philadelphia, PA
D. Bonnell
Affiliation:
Dept. of Materials Science, The University of Pennsylvania, Philadelphia, PA
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Abstract

Recent developments in boron chemistry have allowed the synthesis of TiN/TiB2 composites from polymeric precursors with grain sizes of the order of 10-500 nm. In order to optimize the properties through controlled processing, nucleation of the crystalline phases and subsequent microstructural evolution must be understood. However, the nitride and boride phases are difficult to distinguish in conventional TEM since the grains are too small for diffraction analysis and light elements are not detectable by energy dispersive X-ray spectroscopy.

For the characterization a prototype of an energy filtering TEM (EFTEM) which utilizes an imaging electron energy loss spectrometer incorporated into the column of a normal TEM has been used for elastic filtering and electron spectroscopic imaging (ESI). The ESI-technique allows us to obtain two-dimensional maps of the elemental distribution. These techniques are applied to advantage in the microstructural analysis of the TiN/TB2 nanocomposites.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 286: Symposium J – Nanophase and Nanocomposite Materials , 1992 , 443
Copyright
Copyright © Materials Research Society 1993

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References

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