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Issue 18, 2009
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Particle size and morphology control of the negative thermal expansion material cubic zirconium tungstate

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Abstract

Cubic ZrW2O8 is a negative thermal expansion (NTE) material that is of interest as filler in controlled thermal expansion composites. It is easily accessible from a hydrated precursor, ZrW2O7(OH)2·2H2O, which can be obtained by hydrothermal synthesis. Different reaction conditions were investigated to gain control over the morphology, and to minimize the particle size. Optimized procedures resulted in rod-shaped particles with widths of 10–30 nm and lengths of 200–500 nm, which showed little agglomeration. The particle size and morphology of the precursor are preserved during conversion to the NTE phase at 600–650 °C.

Graphical abstract: Particle size and morphology control of the negative thermal expansion material cubic zirconium tungstate

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Supplementary files

Article information


Submitted
10 Nov 2008
Accepted
03 Feb 2009
First published
05 Mar 2009

J. Mater. Chem., 2009,19, 2760-2765
Article type
Paper

Particle size and morphology control of the negative thermal expansion material cubic zirconium tungstate

L. C. Kozy, M. N. Tahir, C. Lind and W. Tremel, J. Mater. Chem., 2009, 19, 2760
DOI: 10.1039/B820014A

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