Synthesis and spark plasma sintering of sub-micron HfB2: effect of various carbon sources

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Synthesis and spark plasma sintering of sub-micron HfB2 : effect of various carbon sources. / Venugopal, S.; Paul, A.; Vaidhyanathan, B.; Binner, Jonathan; Heaton, A.; Brown, P. M.

In: Journal of the European Ceramic Society, Vol. 34, No. 6, 06.2014, p. 1471-1479.

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Venugopal, S. ; Paul, A. ; Vaidhyanathan, B. ; Binner, Jonathan ; Heaton, A. ; Brown, P. M. / Synthesis and spark plasma sintering of sub-micron HfB2 : effect of various carbon sources. In: Journal of the European Ceramic Society. 2014 ; Vol. 34, No. 6. pp. 1471-1479.

Bibtex

@article{003ec637a0db4eb49409329e0240be8e,
title = "Synthesis and spark plasma sintering of sub-micron HfB2: effect of various carbon sources",
abstract = "The present work describes a simple process to synthesise HfB2 powder with sub-micron sized particles. Hafnium chloride and boric acid were used as the elemental sources whilst several carbon sources including sucrose, graphite, carbon black, carbon nanotubes and liquid and powder phenolic resin were used. The carbon sources were characterised using thermogravimetric analysis and transmission electron microscope. The mechanism by which the structure of the carbon source used, affects the size and morphology of the resultant HfB2 powder was studied; the HfB2 powders were characterised using X-ray diffraction and scanning and transmission electron microscopy. The powder synthesised using powder phenolic resin had a surface area of 21m2g-1 and a particle size distribution between 30 and 150nm. This was sintered using SPS to a relative density of 94% of theoretical density (TD) at 2100°C and 50MPa pressure without the help of any sintering aids.",
keywords = "Carbon sources, HfB, Nano particles, Sintering, SPS, Ultra-high temperature ceramics",
author = "S. Venugopal and A. Paul and B. Vaidhyanathan and Jonathan Binner and A. Heaton and Brown, {P. M.}",
year = "2014",
month = jun,
doi = "10.1016/j.jeurceramsoc.2013.12.025",
language = "English",
volume = "34",
pages = "1471--1479",
journal = "Journal of the European Ceramic Society",
issn = "0955-2219",
publisher = "Elsevier",
number = "6",

}

RIS

TY - JOUR

T1 - Synthesis and spark plasma sintering of sub-micron HfB2

T2 - effect of various carbon sources

AU - Venugopal, S.

AU - Paul, A.

AU - Vaidhyanathan, B.

AU - Binner, Jonathan

AU - Heaton, A.

AU - Brown, P. M.

PY - 2014/6

Y1 - 2014/6

N2 - The present work describes a simple process to synthesise HfB2 powder with sub-micron sized particles. Hafnium chloride and boric acid were used as the elemental sources whilst several carbon sources including sucrose, graphite, carbon black, carbon nanotubes and liquid and powder phenolic resin were used. The carbon sources were characterised using thermogravimetric analysis and transmission electron microscope. The mechanism by which the structure of the carbon source used, affects the size and morphology of the resultant HfB2 powder was studied; the HfB2 powders were characterised using X-ray diffraction and scanning and transmission electron microscopy. The powder synthesised using powder phenolic resin had a surface area of 21m2g-1 and a particle size distribution between 30 and 150nm. This was sintered using SPS to a relative density of 94% of theoretical density (TD) at 2100°C and 50MPa pressure without the help of any sintering aids.

AB - The present work describes a simple process to synthesise HfB2 powder with sub-micron sized particles. Hafnium chloride and boric acid were used as the elemental sources whilst several carbon sources including sucrose, graphite, carbon black, carbon nanotubes and liquid and powder phenolic resin were used. The carbon sources were characterised using thermogravimetric analysis and transmission electron microscope. The mechanism by which the structure of the carbon source used, affects the size and morphology of the resultant HfB2 powder was studied; the HfB2 powders were characterised using X-ray diffraction and scanning and transmission electron microscopy. The powder synthesised using powder phenolic resin had a surface area of 21m2g-1 and a particle size distribution between 30 and 150nm. This was sintered using SPS to a relative density of 94% of theoretical density (TD) at 2100°C and 50MPa pressure without the help of any sintering aids.

KW - Carbon sources

KW - HfB

KW - Nano particles

KW - Sintering

KW - SPS

KW - Ultra-high temperature ceramics

U2 - 10.1016/j.jeurceramsoc.2013.12.025

DO - 10.1016/j.jeurceramsoc.2013.12.025

M3 - Article

AN - SCOPUS:84894906548

VL - 34

SP - 1471

EP - 1479

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

SN - 0955-2219

IS - 6

ER -