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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ratzker, Barak
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024MXene-CNC super performing composite films for flexible and degradable electronicscitations
- 2024The effect of coarse and fine Ti3SiC2 particle reinforcement in aluminum matrix compositescitations
- 2023MXene-Based Ceramic Nanocomposites Enabled by Pressure-Assisted Sinteringcitations
- 2023Exploring the capabilities of high-pressure spark plasma sintering (HPSPS)citations
- 2020Deformation in nanocrystalline ceramicscitations
- 2019Highly-doped Nd:YAG ceramics fabricated by conventional and high pressure SPScitations
- 2019Stress-enhanced dynamic grain growth during high-pressure spark plasma sintering of aluminacitations
- 2018Compression creep of copper under electric current studied by a spark plasma sintering (SPS) apparatuscitations
- 2018Transparent Polycrystalline Magnesium Aluminate Spinel Fabricated by Spark Plasma Sinteringcitations
- 2018High-pressure spark plasma sintering of silicon nitride with LiF additivecitations
- 2016Creep of polycrystalline magnesium aluminate spinel studied by an SPS apparatuscitations
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article
High-pressure spark plasma sintering of silicon nitride with LiF additive
Abstract
<p>High-pressure spark plasma sintering of Si<sub>3</sub>N<sub>4</sub> with Y<sub>2</sub>O<sub>3</sub>, Al<sub>2</sub>O<sub>3</sub> and LiF additives was employed to fabricate high quality dense ceramics comprising approximately 92% α-Si<sub>3</sub>N<sub>4</sub> phase and 8% β-Si<sub>3</sub>N<sub>4</sub> phase. The relatively high pressure applied (up to 650 MPa) had a substantial effect on densification by enhancing particle rearrangement, making it possible to obtain dense Si<sub>3</sub>N<sub>4</sub> at a significantly lower sintering temperature (1350 °C). Consequently, virtually no α to β phase transformation transpired during the liquid phase sintering process. The LiF additive had an indispensable influence on the densification process by lowering the viscous glass formation temperature, which also contributed to enhanced particle rearrangement. The nearly fully dense samples (theoretical density ≥99%) obtained displayed a good combination of mechanical properties, namely elastic modulus (304–316 GPa), hardness (1720–1780 HV2) and fracture toughness (6.0 MPa m<sup>1/2</sup>).</p>