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1. Correlation between mechanical and structural properties as a function of temperature within the TeO2–TiO2–ZnO ternary system

Author

Maggy Dutreilh-Colas, Dominique de Ligny, Michael Bergler, J. de Clermont-Gallerande, Philippe Thomas, Tomokatsu Hayakawa, F. Célarié, Yann Gueguen, Institut de Recherche sur les CERamiques (IRCER), 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 (SPCTS-AXE3), Science des Procédés Céramiques et de Traitements de Surface (SPCTS), 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), 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 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-Alexander Universität Erlangen-Nürnberg (FAU), Nagoya Institute of Technology (NIT), Conseil Régional du Limousin, Pacific Institute for Climate Solutions, Department of Materials Science and Engineering, Nagoya Institute of Technology, IRCER - Axe 3 : organisation structurale multiéchelle des matériaux (IRCER-AXE3), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut des Procédés Appliqués aux Matériaux (IPAM), 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), and Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Optical fiber, Materials science, Thermodynamics, 02 engineering and technology, Viscous liquid, 01 natural sciences, law.invention, [PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph], symbols.namesake, law, 0103 physical sciences, Materials Chemistry, ComputingMilieux_MISCELLANEOUS, 010302 applied physics, [PHYS]Physics [physics], Ternary numeral system, Relaxation (NMR), [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Calorimeter, Brillouin zone, Ceramics and Composites, symbols, 0210 nano-technology, Glass transition, Raman spectroscopy
Abstract

International audience; In situ Raman spectroscopy, Resonance Frequency and Damping Analysis (RFDA) setup and Associated Raman Brillouin Calorimeter (ARABICA) setup experiments as a function of temperature were conducted on the (100-x)TeO2-5TiO2-xZnO (x=15; 17.5; 20; 22.5; 25) glass system. Structural and mechanical properties showed non-conventional properties evolution as a function of ZnO content which are managed by the modification of ZnO polyhedra. Before glass transition temperature (Tg), the evolution of the Boson peak (BP) frequencies and the elastic properties are in accordance with the idea of the relaxation of the strains inside the glass; after Tg, their evolution shows the transition toward a viscous liquid. BP and mechanical properties study evidences that as nano-heterogeneous domains size increases at a faster rate, the mechanical properties will decrease at a slower rate. This point will be helpful for choosing appropriate composition for optical fiber shaping.

Published
2020
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2. Effect of thermally induced structural disorder on the chemical durability of International Simple Glass

Author

Dominique de Ligny, Alexander Veber, Michael Bergler, Hong Li, Frédéric Angeli, Thibault Charpentier, Patrick Jollivet, Stéphane Gin, Laboratoire d'Etudes du Comportement à Long Terme des matériaux de conditionnement (LCLT), Département de recherche sur les Procédés et Matériaux pour les Environnements complexes (DPME), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire Structure et Dynamique par Résonance Magnétique (LCF) (LSDRM), Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M) (NIMBE UMR 3685), Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institute of Ceramics and Glass, Nippon Electric Glass, CEA, ORANO and EDF, Département de recherche sur les technologies pour l'enrichissement, le démantèlement et les déchets (DE2D), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut Rayonnement Matière de Saclay (IRAMIS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)

Subjects
Materials science, Materials Science (miscellaneous), Oxide, Context (language use), 02 engineering and technology, 01 natural sciences, chemistry.chemical_compound, symbols.namesake, 0103 physical sciences, Materials Chemistry, lcsh:TA401-492, 010302 applied physics, Quenching, Aqueous solution, Borosilicate glass, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, Durability, Silicate, chemistry, Chemical engineering, 13. Climate action, Chemistry (miscellaneous), Ceramics and Composites, symbols, lcsh:Materials of engineering and construction. Mechanics of materials, 0210 nano-technology, Raman spectroscopy
Abstract

While the influence of silicate oxide glass composition on its chemical durability is increasingly known, the contribution of structure only is less well understood, yet is crucial for an accurate description of aqueous alteration mechanisms. The effect of structural disorder can be investigated by varying the thermal history of the glass. Furthermore, the structural changes generated by self-irradiation in nuclear glasses can be compared with those induced by fast quenching. In the context of deep geological disposal of vitreous matrices, it is then challenging to address the structural impact on glass durability. Here, a borosilicate glass, the International Simple Glass, was fiberized to obtain a rapidly quenched sample. The quenching rate and fictive temperature were evaluated from in situ Raman and Brillouin spectroscopies. Multinuclear nuclear magnetic resonance was used to obtain insight into the effect of quenching on the pristine and altered glass structure. Higher bond angle distribution and lower mixing of alkalis were observed in the fast quenched glass. Some of AlO4 groups are then Ca-compensated, while a part of BO4 is transformed into BO3 units. The structural modifications increase the hydrolysis of the silicate network occurring in the forward rate regime at 90 °C by a factor of 1.4–1.8 depending on the pH value. Residual rate regime is similarly affected, more significantly at the beginning of the experiments conducted in silica saturated solutions. These findings prove that the reactivity of glass remains controlled by its structure under the various alteration regimes. The structural changes induced by the rapid quenching of borosilicate glasses and their effects on chemical durability have been studied. Understanding how, and how fast, borosilicate glasses degrade is of great importance because they are often used as containment matrices for the disposal of radioactive waste. However, understanding how glass structure affects durability can be troublesome because both structural and compositional factors must be accounted for and are difficult to deconvolute. Now, a team, led by Frederic Angeli at the CEA, Marcoule, France, have shown, using various spectroscopic techniques, how the effects of structural disorder can be investigated by varying the thermal history of a glass. The results show that this methodology can be used to investigate radiation damage in nuclear glasses, the effects of which are similar to those of quenching.

Published
2018
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