Advanced

Time-resolved XRD study of TiC-TiB2 composites obtained by SHS

Contreras, L; Turrillas, X; Vaughan, G B M; Kvick, Åke LU and Rodriguez, M A (2004) In Acta Materialia 52(16). p.4783-4790
Abstract
Composites of TiC and TiB2 were prepared by self-propagating high-temperature synthesis (SHS). Two routes were attempted; from the elements and from a mixture of anatase, boron oxide, graphite and magnesium. The reactions were monitored in situ by synchrotron X-ray diffraction ( lambda = 0. 26102 Angstrom). The powder mixtures were compacted as cylindrical pellets and upon ignition diffraction patterns were collected every 65 ms with a CCD camera. TiC was the first phase to form, followed by TiB2. The reactions take place in time scales of 0.1 s. The temperature profile for the first route was established from the peak position and the known thermal expansion coefficients. The microstructure of the final products was different: particles... (More)
Composites of TiC and TiB2 were prepared by self-propagating high-temperature synthesis (SHS). Two routes were attempted; from the elements and from a mixture of anatase, boron oxide, graphite and magnesium. The reactions were monitored in situ by synchrotron X-ray diffraction ( lambda = 0. 26102 Angstrom). The powder mixtures were compacted as cylindrical pellets and upon ignition diffraction patterns were collected every 65 ms with a CCD camera. TiC was the first phase to form, followed by TiB2. The reactions take place in time scales of 0.1 s. The temperature profile for the first route was established from the peak position and the known thermal expansion coefficients. The microstructure of the final products was different: particles of 10 mum for the first and submicron for the second. The viability of the second route to produce ceramic powders in a cheaper way was confirmed. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Acta Materialia
volume
52
issue
16
pages
4783 - 4790
publisher
Elsevier
external identifiers
  • scopus:4243199184
ISSN
1873-2453
DOI
10.1016/j.actamat.2004.06.049
language
English
LU publication?
yes
id
aca82075-52b5-4463-8a7d-6301f02dff1e (old id 140868)
date added to LUP
2007-07-13 08:58:23
date last changed
2017-10-01 03:41:31
@article{aca82075-52b5-4463-8a7d-6301f02dff1e,
  abstract     = {Composites of TiC and TiB2 were prepared by self-propagating high-temperature synthesis (SHS). Two routes were attempted; from the elements and from a mixture of anatase, boron oxide, graphite and magnesium. The reactions were monitored in situ by synchrotron X-ray diffraction ( lambda = 0. 26102 Angstrom). The powder mixtures were compacted as cylindrical pellets and upon ignition diffraction patterns were collected every 65 ms with a CCD camera. TiC was the first phase to form, followed by TiB2. The reactions take place in time scales of 0.1 s. The temperature profile for the first route was established from the peak position and the known thermal expansion coefficients. The microstructure of the final products was different: particles of 10 mum for the first and submicron for the second. The viability of the second route to produce ceramic powders in a cheaper way was confirmed. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.},
  author       = {Contreras, L and Turrillas, X and Vaughan, G B M and Kvick, Åke and Rodriguez, M A},
  issn         = {1873-2453},
  language     = {eng},
  number       = {16},
  pages        = {4783--4790},
  publisher    = {Elsevier},
  series       = {Acta Materialia},
  title        = {Time-resolved XRD study of TiC-TiB2 composites obtained by SHS},
  url          = {http://dx.doi.org/10.1016/j.actamat.2004.06.049},
  volume       = {52},
  year         = {2004},
}