Intragranular Tungsten/Zirconium Carbide Nanocomposites via a Selective Liquid/Solid Displacement Reaction
A selective liquid/solid displacement reaction has been used, for the first time, to convert non-oxide ceramic solid solutions into composites comprised of intragranular metal nanoparticles embedded within non-oxide ceramic microcrystals. The reaction of (Zr xW 1-x)C microparticles with a Zr-Cu liquid at 1300°C resulted in the formation of W/ZrC microparticles with a core-shell morphology. The internal microparticle core was comprised of W nanoparticles embedded within a single crystal ZrC matrix, whereas the W-free shell was comprised of an epitaxial layer of ZrC. Such a selective liquid/solid reaction process may be used to generate a variety of intragranular metal/ceramic-matrix composites.
D. W. Lipke et al., "Intragranular Tungsten/Zirconium Carbide Nanocomposites via a Selective Liquid/Solid Displacement Reaction," Journal of the American Ceramic Society, vol. 95, no. 9, pp. 2769 - 2772, American Ceramic Society, Sep 2012.
The definitive version is available at https://doi.org/10.1111/j.1551-2916.2012.05345.x
International Conference on Biomaterials and Implants: Prospects and Possibilities in the New Millennium, BIO 2011 (2011, Jul. 21-23, Kolkata, India)
Materials Science and Engineering
Keywords and Phrases
Core-shell morphologies; Displacement reactions; Micro-particles; Nonoxide ceramics; Reaction process, Carbides; Oxides; Zirconium; Zirconium compounds, Substitution reactions
International Standard Serial Number (ISSN)
Article - Conference proceedings
© 2012 American Ceramic Society, All rights reserved.
01 Sep 2012