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Title: Time-resolved XRD study of TiC-TiB{sub 2} composites obtained by SHS

Abstract

Composites of TiC and TiB{sub 2} 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 A). 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 TiB{sub 2}. 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 {mu}m for the first and submicron for the second. The viability of the second route to produce ceramic powders in a cheaper way was confirmed.

Authors:
 [1];  [2];  [3];  [3];  [1]
  1. Instituto de Ceramica y Vidrio, CSIC, Camino de Valdelatas s/n, 28049 Cantoblanco (Spain)
  2. E. Torroja Institute for Construction Sciences (IETcc), CSIC, C/. Serrano Galvache s/n., 28033 Madrid, Spain. (Spain)
  3. European Synchrotron Radiation Facility (ESRF), BP 220, F-38043 Grenoble Cedex (France)
Publication Date:
OSTI Identifier:
20634774
Resource Type:
Journal Article
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 52; Journal Issue: 16; Other Information: DOI: 10.1016/j.actamat.2004.06.049; PII: S1359-6454(04)00383-0; Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1359-6454
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BORON OXIDES; GRAPHITE; MAGNESIUM; MICROSTRUCTURE; MIXTURES; SYNCHROTRON RADIATION; SYNCHROTRONS; THERMAL EXPANSION; TIME RESOLUTION; TITANIUM BORIDES; TITANIUM CARBIDES; X-RAY DIFFRACTION

Citation Formats

Contreras, L, Turrillas, X, Vaughan, G B.M., Kvick, A, and Rodriguez, M A. Time-resolved XRD study of TiC-TiB{sub 2} composites obtained by SHS. United States: N. p., 2004. Web. doi:10.1016/j.actamat.2004.06.049.
Contreras, L, Turrillas, X, Vaughan, G B.M., Kvick, A, & Rodriguez, M A. Time-resolved XRD study of TiC-TiB{sub 2} composites obtained by SHS. United States. https://doi.org/10.1016/j.actamat.2004.06.049
Contreras, L, Turrillas, X, Vaughan, G B.M., Kvick, A, and Rodriguez, M A. 2004. "Time-resolved XRD study of TiC-TiB{sub 2} composites obtained by SHS". United States. https://doi.org/10.1016/j.actamat.2004.06.049.
@article{osti_20634774,
title = {Time-resolved XRD study of TiC-TiB{sub 2} composites obtained by SHS},
author = {Contreras, L and Turrillas, X and Vaughan, G B.M. and Kvick, A and Rodriguez, M A},
abstractNote = {Composites of TiC and TiB{sub 2} 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 A). 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 TiB{sub 2}. 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 {mu}m for the first and submicron for the second. The viability of the second route to produce ceramic powders in a cheaper way was confirmed.},
doi = {10.1016/j.actamat.2004.06.049},
url = {https://www.osti.gov/biblio/20634774}, journal = {Acta Materialia},
issn = {1359-6454},
number = 16,
volume = 52,
place = {United States},
year = {Mon Sep 20 00:00:00 EDT 2004},
month = {Mon Sep 20 00:00:00 EDT 2004}
}