Search

Your search keyword '"Fabrice Célarié"' showing total 8 results
Start Over Author "Fabrice Célarié" Language undetermined
8 results on '"Fabrice Célarié"'

1. First La2O2S infrared transparent ceramics

Author

Alexandre Le Coz, Guillaume R. Durand, Louis Cornet, Nathalie Herbert, Francis Gouttefangeas, Loïc Joanny, Fabrice Célarié, François Cheviré, Odile Merdrignac-Conanec, Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Synthèse Caractérisation Analyse de la Matière (ScanMAT), Université de Rennes (UR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique de Rennes (IPR), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS), and French Direction Générale de l’Armement (DGA) and the Ministère des armées - Agence de l’Innovation de Défence (AID)

Subjects
Hot-pressing, Materials Chemistry, Ceramics and Composites, Young modulus, [CHIM]Chemical Sciences, La2O2S, [CHIM.MATE]Chemical Sciences/Material chemistry, Vickers hardness, Infrared transmission
Abstract

International audience; Lanthanum oxysulfide (La2O2S) was investigated as infrared transparent ceramic to benefit from stronger chemical bonds and superior mechanical performances to that of non-oxide benchmark infrared materials. La2O2S ceramics were processed by hot-pressing powders prepared by combustion synthesis followed by a sulfurization treatment. Powders and ceramics were characterised through various techniques (XRD, UV-Vis-IR spectroscopy, particle size analysis, SEM, Impulse Excitation Technique, microhardness and fracture toughness tests) to assess their purity, study their microstructure and determine their optical and mechanical properties. The study reports the first IR transmission spectra, Poisson’s ratio, Young’s and shear moduli and fracture toughness values of La2O2S polycrystalline ceramics. The ceramics showed transparency in the 2-11 μm range and their mechanical performances were all superior to that of commercial infrared ceramics. The best transmission (89% of the theoretical transmission) was measured at 7.3 µm for 1 mm-thick ceramics hot-pressed at 1200-1250°C.

Published
2023

2. Anodic bonding of mid-infrared transparent germanate glasses for high pressure - high temperature microfluidic applications

Author

Fabrice Célarié, Sandy Morais, Yannick Ledemi, Samuel Marre, Virginie Nazabal, Younes Messaddeq, Julien Ari, Geoffrey Louvet, Bruno Bureau, Institut des Sciences Chimiques de Rennes (ISCR), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Université Laval [Québec] (ULaval), Institut de Physique de Rennes (IPR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), This work was supported by the Canada Excellence Research Chairs, Government of Canada [photonics innovation], Centre National de la Recherche Scientifique [MI - μHPI], Fonds de Recherche du Québec - Nature et Technologies [strategic cluster], Natural Sciences and Engineering Research Council of Canada [strategic project grant]., ANR-12-SEED-0001,CGSµLab,Micro-laboratoires géologiques sur puce pour l'étude des processus clés du transport réactif multiphasique appliqués au stockage géologique du CO2.(2012), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Fabrication, Infrared, microfluidics, Infrared spectroscopy, 02 engineering and technology, Substrate (electronics), 010402 general chemistry, 01 natural sciences, mid- infrared, anodic bonding, high pressure/high temperature, 300 Processing / Synthesis and Recycling, 208 Sensors and actuators, General Materials Science, Germanate, Materials of engineering and construction. Mechanics of materials, Germanate glass, [PHYS]Physics [physics], business.industry, mid-infrared, [CHIM.MATE]Chemical Sciences/Material chemistry, Optical, Magnetic and Electronic Device Materials, 505 Optical / Molecular spectroscopy, 204 Optics / Optical applications, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Anodic bonding, TA401-492, Optoelectronics, Microreactor, 0210 nano-technology, business, 107 Glass and ceramic materials, TP248.13-248.65, Biotechnology, Microfabrication
Abstract

High pressure/high-temperature microreactors based on silicon-Pyrex® microfabrication technologies have attracted increasing interest in various applications providing optical access in high-pressure flow processes. However, they cannot be coupled to infrared spectroscopy due to the limited optical transparency (up to ~2.7 μm in the infrared region) of the Pyrex® glass substrate employed in the microreactor fabrication. To address this limitation, the alternative approach proposed in this work consists in replacing the Pyrex® glass in the microreactor by a mid-infrared transparent glass with thermal and mechanical properties as close as possible or even better to those of the Pyrex®, including its ability for silicon-wafers coupling by the anodic bonding process. Glasses based on germanate GeO2, known for their excellent transmission in the mid-infrared range and thermal/thermo-mechanical properties, have been thus evaluated and developed for this purpose. The optical, mechanical, thermal and electrical conductivity properties of adapted glass compositions belonging to five vitreous systems have been systemically investigated. The glass composition 70GeO2-15Al2O3-10La2O3-5Na2O (mol.%) was defined as the best candidate and produced in large plates of 50 mm diameter and 1 mm thickness. Anodic bonding tests with Si-wafers have been then successfully conducted, paving the way for the development of fully mid-infrared transparent silicon-glass microreactors., Graphical abstract

Published
2020

3. Effect of composition and high-temperature annealing on the local deformation behavior of silicon oxycarbides

Author

Christina Stabler, Fabrice Célarié, Lothar Wondraczek, Tanguy Rouxel, René Limbach, Ralf Riedel, Emanuel Ionescu, Technische Universität Darmstadt (TU Darmstadt), Institut de Physique de Rennes (IPR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), Friedrich-Schiller-Universität = Friedrich Schiller University Jena [Jena, Germany], Deutsche Forschungsgemeinschaft, DFG IO 64/7-1, Technische Universität Darmstadt - Technical University of Darmstadt (TU Darmstadt), and Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Temperature sensitivity, Materials science, Silicon, Annealing (metallurgy), Modulus, Nanoparticle, chemistry.chemical_element, 02 engineering and technology, 01 natural sciences, Brittleness, 0103 physical sciences, Materials Chemistry, Composite material, Plastic deformation, Silicon oxycarbide, [PHYS]Physics [physics], 010302 applied physics, Thermal annealing, Elastic properties, Poisson's ratio, 021001 nanoscience & nanotechnology, Sphere packing, chemistry, Phase composition, Ceramics and Composites, 0210 nano-technology
Abstract

International audience; Silicon oxycarbides with varying compositions were investigated concerning their elastic and plastic properties. Additionally, the impact of thermal annealing on their elastic properties was assessed. Phase separation of SiOC seems to have no significant impact on Young's modulus (high values of β-SiC compensate the low values of the vitreous silica matrix) and hardness. However, it leads to an increase in Poisson's ratio, indicating an increase in the atomic packing density. The phase composition of SiOC significantly influences Young's modulus, hardness, brittleness and strain-rate sensitivity the amount of both β-SiC and segregated carbon governs Young's modulus and hardness, whereas the fraction of free carbon determines brittleness and strain-rate sensitivity. Thermal annealing of SiOC glass-ceramics leads to an increase in Young's modulus. However, the temperature sensitivity of Young's modulus and Poisson's ratio is not affected, indicating the glassy matrix being stable during thermal annealing. A slightly improved ordering of the segregated carbon and the β-SiC nanoparticles upon thermal annealing was observed. It is suggested that this is responsible for the increase in Young's modulus.

Published
2019

4. Fracture toughness, fracture energy and slow crack growth of glass as investigated by the Single-Edge Precracked Beam (SEPB) and Chevron-Notched Beam (CNB) methods

Author

Hervé Orain, Theany To, Arnaud Bazin, Mickaël Le Fur, Fabrice Célarié, Tanguy Rouxel, Yann Gueguen, Clément Roux-Langlois, Vincent Burgaud, Institut de Physique de Rennes (IPR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), NIST, National Institute of Standards and Technology, ERC, European Research Council, US, Universiteit Stellenbosch, 320506, ERC, European Research Council, and Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Polymers and Plastics, Single-Edge Precracked Beam (SEPB), 02 engineering and technology, Edge (geometry), 01 natural sciences, Chevron-Notched Beam (CNB), Fracture toughness, Indentation, 0103 physical sciences, Chevron (geology), Composite material, [PHYS]Physics [physics], 010302 applied physics, Vickers Indentation Fracture (VIF), Stress-corrosion, Metals and Alloys, Fracture mechanics, 021001 nanoscience & nanotechnology, Electronic, Optical and Magnetic Materials, Cracking, Ceramics and Composites, Fracture (geology), 0210 nano-technology, Beam (structure)
Abstract

International audience; We show that the Single-Edge Precracked Beam (SEPB) test is not only suitable to the determination of the fracture toughness (KIc) of glass, but also offers a unique opportunity to assess the slow crack growth behavior in a single experiment lasting for few minutes. Besides, we found that it is possible to get either a stable or an unstable final fracture regime (pre-cracked specimen) depending on the testing parameters, and that the unstable case is preferable for the estimation of KIc. The “pop-in” precrack was found mostly to close completely once the load was suppressed on the bridge-flexure device. This led to a reopening event on the loading curves. It is noteworthy that all these original observations were made possible thanks to the design of a very stiff testing apparatus (6.7 MN m−1) allowing for a cross-head speed as small as 0.01 μm s−1. Results obtained on four grades of commercially available glasses are compared to those stemming from Vickers indentation cracking and chevron notched experiments. © 2017 Acta Materialia Inc.

Published
2018

5. Transparent Ceramics: Scalable and Formable Tellurite‐Based Transparent Ceramics for Near Infrared Applications (Advanced Optical Materials 10/2016)

Author

Yann Launay, Cécile Genevois, Gaëlle Delaizir, Fabrice Célarié, François Brisset, Jean-René Duclere, Emmanuel Véron, Tomokatsu Hayakawa, Sébastien Chenu, Philippe Thomas, Julie Carreaud, Anthony Bertrand, and Mathieu Allix

Subjects
Materials science, Transparent ceramics, business.industry, Optical materials, Near-infrared spectroscopy, Optoelectronics, business, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Published
2016

6. Real-time observation of non-equilibrium liquid condensate confined at tensile crack tips in oxide glasses

Author

Matteo Ciccotti, Carina Oelgardt, Christian Marlière, Lothar Wondraczek, Fabrice Célarié, Anne Dittmar, Institute of Non-Metallic Materials [Clausthal-Zellerfeld], Clausthal University of Technology (TU Clausthal), Laboratoire des colloïdes, verres et nanomatériaux (LCVN), Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS), and This work was financially supported by the German Academic Exchange Service, Germany, and Egide, France, (DAAD-PROCOPE) under contract no. D/0333567 is gratefully acknowledged.

Subjects
Materials science, Oxide, Mineralogy, FOS: Physical sciences, 02 engineering and technology, 01 natural sciences, Corrosion, Stress (mechanics), Crack closure, chemistry.chemical_compound, stress, Phase (matter), mental disorders, 0103 physical sciences, Ultimate tensile strength, Materials Chemistry, Composite material, 010302 applied physics, Condensed Matter - Materials Science, corrosion/corrosion resistance, Materials Science (cond-mat.mtrl-sci), Fracture mechanics, 021001 nanoscience & nanotechnology, chemistry, silica, Ceramics and Composites, Fracture (geology), [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], 0210 nano-technology, crack growth
Abstract

Since crack propagation in oxide materials at low crack velocities is partly determined by chemical corrosion, proper knowledge of the crack tip chemistry is crucial for understanding fracture in these materials. Such knowledge can be obtained only from in situ studies because the processes that occur in the highly confined environment of the crack tip are very different from those that take place at free surfaces, or that can be traced post mortem. We report the occurrence of hydrous liquid condensate between the two fracture surfaces in the vicinity of the tip of tensile cracks in silica. Observations are performed in real-time by means of atomic force microscopy (AFM) at continuously controlled crack velocities in the regime of stress corrosion. Condensate formation and changes in extent and shape are demonstrated for a wide range of macroscopic humidity at different crack speeds. Its liquid character is confirmed by the study of AFM phase-contrast data. It is believed that this evidence of a nanoscale liquid hydrous phase at the crack tip will enable novel insights in the chemistry of failure of oxide materials., Comment: 13 pages, 4 figures, to be published on J. Am. Cer. Soc

Published
2005
Full Text
View/download PDF

7. Evidence and modeling of mechanoluminescence in a novel transparent glass particulate composite

Author

Marion Dubernet, Yann Gueguen, Patrick Houizot, Fabrice Célarié, Jean-Christophe Sangleboeuf, Hervé Orain, Tanguy Rouxel, National Institute for Materials Science (NIMS), Institut de Physique de Rennes (IPR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), Célarié, Fabrice, and Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[CHIM.MATE] Chemical Sciences/Material chemistry, [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph], [CHIM.MATE]Chemical Sciences/Material chemistry, [SPI.MECA.MEMA] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

8. Céramique tellurite transparente obtenue par cristallisation complète d'un verre

Author

Sébastien Chenu, Morgane Dolhen, Anthony Bertrand, Julie Carreaud, Jean-René Duclere, Hayakawa, T., Mathieu Allix, Yann Launay, Véron, E., Couderc, V., Fabrice Célarié, Cecile Genevois, Brisset, F., Philippe Thomas, Gaëlle Delaizir, DERORY, BEATRICE, Axe 3 : organisation structurale multiéchelle des matériaux (SPCTS-AXE3), Science des Procédés Céramiques et de Traitements de Surface (SPCTS), Université de Limoges (UNILIM)-Ecole Nationale Supérieure de Céramique Industrielle (ENSCI)-Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Ecole Nationale Supérieure de Céramique Industrielle (ENSCI)-Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Axe 3 : organisation structurale multiéchelle des matériaux, Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Ecole Nationale Supérieure de Céramique Industrielle (ENSCI)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Institut des Procédés Appliqués aux Matériaux (IPAM), and Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Ecole Nationale Supérieure de Céramique Industrielle (ENSCI)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)

Subjects
[CHIM.MATE] Chemical Sciences/Material chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, [SPI.MAT] Engineering Sciences [physics]/Materials, [SPI.MAT]Engineering Sciences [physics]/Materials

Catalog

Books, media, physical & digital resources
See catalog results