Microstructure and phase transformations of silica glass and vanadium oxide by severe plastic deformation via high-pressure torsion straining
| Autor: | Ikuro Fujita, Xavier Sauvage, Zenji Horita, Kaveh Edalati, Makoto Arita |
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| Přispěvatelé: | International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University, Fukuoka (DMS), Groupe de physique des matériaux (GPM), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Department of Material Science and Engineering [Fukuoka], ANR-11-EQPX-0020,GENESIS,Groupe d'Etudes et de Nanoanalyses des Effets d'IrradiationS(2011), Kyushu University [Fukuoka], Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU) |
| Rok vydání: | 2019 |
| Předmět: |
Ceramics
Materials science Vanadium dioxide (VO2) 02 engineering and technology Plasticity Triclinic crystal system 010402 general chemistry 01 natural sciences Vanadium oxide law.invention Severe plastic deformation (SPD) Brittleness SiO2 glass law Materials Chemistry Crystallization Composite material Phase transition Mechanical Engineering Metals and Alloys 021001 nanoscience & nanotechnology Microstructure 0104 chemical sciences Mechanics of Materials [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] Ultrafine-grained (UFG) Severe plastic deformation 0210 nano-technology Nanostructured oxides Monoclinic crystal system |
| Zdroj: | Journal of Alloys and Compounds Journal of Alloys and Compounds, 2019, 779, pp.394-398. ⟨10.1016/j.jallcom.2018.11.086⟩ Journal of Alloys and Compounds, Elsevier, 2019, 779, pp.394-398. ⟨10.1016/j.jallcom.2018.11.086⟩ |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2018.11.086 |
| Popis: | International audience; Plastic deformation of oxides is generally difficult due to their hard and brittle nature resulting from their covalent or ionic bondings. In this study, severe plastic deformation was successfully introduced in SiO2 glass and crystalline VO2 by high-pressure torsion (HPT). SiO2 glass transformed to a denser amorphous phase without showing any crystallization after processing in the temperature range of 300–723 K. Crystalline VO2 transformed from the coarse-grained monoclinic phase to a nanograined triclinic phase with insulating electrical properties by plastic strain effect. These findings indicate the potential of HPT process in tuning the crystal structure of optical and electrical oxides. |
| Databáze: | OpenAIRE |
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