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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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Schoenstein, Frédéric
Université Sorbonne Paris Nord
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (24/24 displayed)
- 2023Microstructure effects on thermal and electrical conductivities in the intermetallic compound Ag$$_{3}$$Sn-based materials, sintered by SPS in view of die-attachment applicationscitations
- 2023Grain-size effect on Cr3+ and F-centres photoluminescence in nanophase MgAl2O4 ceramicscitations
- 2023Grain-size effect on Cr$^{3+}$ and F-centres photoluminescence in nanophase MgAl$_2$O$_4$ ceramicscitations
- 2022Spark Plasma Sintering of Nanostructured TiCrC Carbides Prepared via Mechanical Alloyingcitations
- 2022The Polyol Process and the Synthesis of ζ Intermetallic Compound Ag5Sn0.9citations
- 2020From Ni–P Metastable Alloy Nanoparticles to Bulk Submicrometer Grain-Sized MMCs with Tunable Mechanical and Magnetic Propertiescitations
- 2020Spin Coating and Micro-Patterning Optimization of Composite Thin Films Based on PVDFcitations
- 2020Enhanced Magnetic Behavior of Cobalt Nano-Rods Elaborated by the Polyol Process Assisted with an External Magnetic Fieldcitations
- 2019Morphology and luminescence of MgAl2O4 ceramics obtained via spark plasma sinteringcitations
- 2018Composite microstructures and piezoelectric properties in tantalum substituted lead-free K 0.5 Na 0.5 Nb 1-x Ta x O 3 ceramicscitations
- 2017Substitution effect of Me = Al, Bi, Cr and Mn to the microwave properties of polyaniline/BaMeFe 11 O 19 for absorbing electromagnetic wavescitations
- 2017Spark plasma sintering (SPS) of pure and doped alumina ceramics
- 2017Effect of stacking faults on the magnetocrystalline anisotropy of hcp Co-based nanowirescitations
- 2015Synthesis, microstructure and electromechanical properties of undoped (K0·5Na0·5)NbO3citations
- 2014Nanocrystalline Hydroxyapatite Ceramics Prepared by Hydrolysis in Polyol Medium, Microstructure and Mechanical Properties after Spark Plasma Sintering.citations
- 2014Spark Plasma Sintering constrained process parameters of sintered silver paste for connection in power electronic modules: Microstructure, mechanical and thermal propertiescitations
- 2014The effect of pH and the process of direct or inverse synthesis of silicon-Substituted hydroxyapatite prepared by hydrolysis in aqueous medium.citations
- 2014Piezoelectric performances of undoped (K,Na)NbO3 ceramics and crystals for transducers applications. citations
- 2014Effect of spark plasma sintering process on the microstructure and mechanical properties of Nano crystalline hydroxyapatite ceramics prepared by hydrolysis in polyol mediumcitations
- 2014Effect of spark plasma sintering process on the microstructure and mechanical properties of Nano crystalline hydroxyapatite ceramics prepared by hydrolysis in polyol mediumcitations
- 2014Electromechanical Properties and Microstructure of Undoped K0.5Na0.5NbO3 Ceramics and KNbO3-NaNbO3 Crystalscitations
- 2014High electromechanical performance with spark plasma sintering of undoped K0.5Na0.5NbO3 ceramicscitations
- 2013Synthesis and functional properties of piezoelectric lead free K0.5Na0.5NbO3 ceramics and single crystals.
- 2007CoFe2O4 NANOSTRUCTURED MAGNETIC MATERIALS : INFLUENCE OF NOT-CONVENTIONAL METHODS OF COMPACTION (SPS, HIP) ON THE MICROSTRUCTURE AND PHYSICAL CHARACTERISTICS.
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article
Synthesis, microstructure and electromechanical properties of undoped (K0·5Na0·5)NbO3
Abstract
Volume 114, 2015 - Issue 4 -page 211-214Authors :M. Bah, F. Giovannelli, F. Schoenstein, G. Feuillard, E. Le Clezio and I. Monot-Laffez.Abstract :Conventional solid state mixed oxide route using manual and ball milling is investigated for the preparation of K0·5Na0·5NbO3 (KNN) ceramics. Microstructure engineering was made using two milling methods and sintering techniques, and the crystal growth; then electromechanical properties were investigated as a function of sintering temperature, densification and grain size. The sintering conditions were set at 920°C/5 min for spark plasma sintering and 1090–1120°C/10 and 48 h for classical sintering. KNN crystal was grown using floating zone technique under nitrogen gas, where the translation and rotation speeds were fixed at 3 mm h−1 and 20 rev min−1 respectively. Piezoelectric and dielectric performances were measured and related to the microstructure. High kt (33 to 48%), kp of 18 to 48% and d33 of 127–140 pC N−1 were reached for relative densities of 84 to 96%. KNN ceramics are now available for the design of ultrasonic sensors.Keywords:Lead free KNN, Sintering, Crystal growth, Piezoelectric properties