Singlard, Marc and Tessier-Doyen, Nicolas and Chevallier, Geoffroy and Oriol, Stéphane and Fiore, Guiseppe and Vieille, Bruno and Estournès, Claude
and Vardelle, Michel and Rossignol, Sylvie
Spark plasma sintering and mechanical properties of compounds in TiB2-SiC pseudo-diagram.
(2018)
Ceramics International, 44 (18). 22357-22364. ISSN 0272-8842
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(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 2MB |
Official URL: https://doi.org/10.1016/j.ceramint.2018.08.362
Abstract
The influence of spark plasma sintering (SPS) parameters (temperature, time, pressure) and the role of particle size on densification, microstructure and mechanical properties of commercial additive-free TiB2, SiC and composites thereof were studied by X-ray diffraction, scanning electron microscopy, the ultrasonic method and indentation. Three particle sizes of SiC and 2 of TiB2 were processed. An optimal cycle was found for TiB2 and SiC: 2000 °C, 3 min dwell time, and 100 MPa applied at 600 °C. The relative density of pure SiC increases linearly from 70% to 90% when the initial particle size decreases from 1.75 μm to 0.5 μm. Pure TiB2 was densified up to 87%. Using 2.5 wt% SiC in TiB2, the relative density increases to 97%. Young's modulus and the hardness of all samples were measured, with results discussed. The higher properties were obtained for additive-free TiB2–5% SiC with a relative density of 97% and with the Young's modulus and Vickers hardness values being close to 378 GPa and 23 GPa, respectively.
Item Type: | Article |
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HAL Id: | hal-01917193 |
Audience (journal): | International peer-reviewed journal |
Uncontrolled Keywords: | |
Institution: | French research institutions > Centre National d'Études Spatiales - CNES (FRANCE) French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Other partners > Université de Limoges - UNILIM (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) |
Laboratory name: | |
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Deposited On: | 09 Nov 2018 10:06 |
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