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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/19338

Title: Screw dislocation assisted spontaneous growth of HfB2 tubes and rods
Authors: Venugopal, Saranya
Jayaseelan, Daniel Doni
Paul, Anish
Vaidhyanathan, Bala
Binner, J.G.P.
Brown, Peter M.
Issue Date: 2015
Publisher: © The American Ceramic Society. Published by Wiley.
Citation: VENUGOPAL, S. ...et al., 2015. Screw Dislocation Assisted Spontaneous Growth of HfB2 Tubes and Rods. Journal of the American Ceramic Society, 98(7), pp. 2060-2064.
Abstract: The mechanism of anisotropic growth of HfB2 rods has been discussed in this study. HfB2 powder has been synthesized via a sol–gel-based route using phenolic resin, hafnium chloride, and boric acid as the source of carbon, hafnium, and boron respectively, though a small number of comparative experiments involved amorphous boron as the boron source. The effects of calcination dwell time and Hf:C and Hf:B molar ratio on the purity and morphology of the final powder have been studied and the mechanism of anisotropic growth of HfB2 has been investigated. It is hypothesized that imperfect oriented attachment of finer HfB2 particles results in screw dislocations in the coarser particles. The screw dislocation facilitates dislocation-driven growth of particles into anisotropic HfB2 rods.
Description: This paper is in closed access.
Version: Published
DOI: 10.1111/jace.13615
URI: https://dspace.lboro.ac.uk/2134/19338
Publisher Link: http://dx.doi.org/10.1111/jace.13615
ISSN: 0002-7820
Appears in Collections:Closed Access (Materials)

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