The Experts below are selected from a list of 4443 Experts worldwide ranked by ideXlab platform
Alexandre Maitre - One of the best experts on this subject based on the ideXlab platform.
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new approach of the evolution of Densification mechanisms during spark plasma sintering application to zirconium oxy carbide ceramics
Scripta Materialia, 2015Co-Authors: Guy Antou, Nicolas Pradeilles, Mathieu Gendre, Alexandre MaitreAbstract:The kinetics of spark plasma sintered ZrC0.94O0.05 ceramics have been investigated. A change of Densification mechanism appears during the intermediate and Final sintering stages. During this last stage, the deformation mechanism is similar to the one involved during creep of dense ZrC0.94O0.05 ceramics. The comparison of Densification and creep strain rates seems to show that no specific effects strongly enhance strain rate during the Final Densification stage of Spark Plasma Sintering.
Guy Antou - One of the best experts on this subject based on the ideXlab platform.
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new approach of the evolution of Densification mechanisms during spark plasma sintering application to zirconium oxy carbide ceramics
Scripta Materialia, 2015Co-Authors: Guy Antou, Nicolas Pradeilles, Mathieu Gendre, Alexandre MaitreAbstract:The kinetics of spark plasma sintered ZrC0.94O0.05 ceramics have been investigated. A change of Densification mechanism appears during the intermediate and Final sintering stages. During this last stage, the deformation mechanism is similar to the one involved during creep of dense ZrC0.94O0.05 ceramics. The comparison of Densification and creep strain rates seems to show that no specific effects strongly enhance strain rate during the Final Densification stage of Spark Plasma Sintering.
Pascual, María Jesús - One of the best experts on this subject based on the ideXlab platform.
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Glass-Ceramics Processed by Spark Plasma Sintering (SPS) for Optical Applications
Multidisciplinary Digital Publishing Institute, 2020Co-Authors: Singarapu Babu, Galusek Dušan, Durán Alicia, Pascual, María JesúsAbstract:This paper presents a review on the preparation of glass-ceramics (GCs) and, in particular, transparent GCs by the advanced processing technique of spark plasma sintering (SPS). SPS is an important approach to obtain from simple to complex nanostructured transparent GCs, full Densification in a short time, and highly homogeneous materials for optical applications. The influence of the different processing parameters, such as temperature, pressure, sintering dwell time on the shrinkage rate, and Final Densification and transparency, are discussed and how this affects the glass material properties. Normally, transparent glass-ceramics are obtained by conventional melt-quenching, followed by thermal treatment. Additionally, the GC scan is produced by sintering and crystallization from glass powders. Hot pressing techniques (HP) in which the source of heating is high-frequency induction can be also applied to enhance this process. In the case of transparent ceramics and glass-ceramics, spark plasma sintering is a promising processing tool. It is possible to enhance the material properties in terms of its compactness, porosities, crystallization, keeping the size of the crystals in the nanometric scale. Moreover, the introduction of a high concentration of active gain media into the host matrix provides functional glass-ceramics systems with enhanced luminescence intensity through reducing non-radiative transitions like multi phonon relaxation (MPR) and cross relaxations (CR), thus providing longer lifetimes. More effort is needed to better understand the sintering mechanisms by SPS in transparent GC systems and optimize their Final optical performance
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Glass-Ceramics Processed by Spark Plasma Sintering (SPS) for Optical Applications
'MDPI AG', 2020Co-Authors: Singarapu Babu, Galusek Dušan, Durán Alicia, Pascual, María JesúsAbstract:© 2020 by the authors.This paper presents a review on the preparation of glass-ceramics (GCs) and, in particular, transparent GCs by the advanced processing technique of spark plasma sintering (SPS). SPS is an important approach to obtain from simple to complex nanostructured transparent GCs, full Densification in a short time, and highly homogeneous materials for optical applications. The influence of the different processing parameters, such as temperature, pressure, sintering dwell time on the shrinkage rate, and Final Densification and transparency, are discussed and how this affects the glass material properties. Normally, transparent glass-ceramics are obtained by conventional melt-quenching, followed by thermal treatment. Additionally, the GC scan is produced by sintering and crystallization from glass powders. Hot pressing techniques (HP) in which the source of heating is high-frequency induction can be also applied to enhance this process. In the case of transparent ceramics and glass-ceramics, spark plasma sintering is a promising processing tool. It is possible to enhance the material properties in terms of its compactness, porosities, crystallization, keeping the size of the crystals in the nanometric scale. Moreover, the introduction of a high concentration of active gain media into the host matrix provides functional glass-ceramics systems with enhanced luminescence intensity through reducing non-radiative transitions like multi phonon relaxation (MPR) and cross relaxations (CR), thus providing longer lifetimes. More effort is needed to better understand the sintering mechanisms by SPS in transparent GC systems and optimize their Final optical performance.Funding from the project MAT2017-87035-C2-1-P/2-P (AEI/FEDER, UE) is acknowledged. This paper is a part of the dissemination activities of project FunGlass. This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No. 739566. Funding from the project VEGA 1/0527/18 is gratefully acknowledged.Peer reviewe
Mathieu Gendre - One of the best experts on this subject based on the ideXlab platform.
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new approach of the evolution of Densification mechanisms during spark plasma sintering application to zirconium oxy carbide ceramics
Scripta Materialia, 2015Co-Authors: Guy Antou, Nicolas Pradeilles, Mathieu Gendre, Alexandre MaitreAbstract:The kinetics of spark plasma sintered ZrC0.94O0.05 ceramics have been investigated. A change of Densification mechanism appears during the intermediate and Final sintering stages. During this last stage, the deformation mechanism is similar to the one involved during creep of dense ZrC0.94O0.05 ceramics. The comparison of Densification and creep strain rates seems to show that no specific effects strongly enhance strain rate during the Final Densification stage of Spark Plasma Sintering.
Nicolas Pradeilles - One of the best experts on this subject based on the ideXlab platform.
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new approach of the evolution of Densification mechanisms during spark plasma sintering application to zirconium oxy carbide ceramics
Scripta Materialia, 2015Co-Authors: Guy Antou, Nicolas Pradeilles, Mathieu Gendre, Alexandre MaitreAbstract:The kinetics of spark plasma sintered ZrC0.94O0.05 ceramics have been investigated. A change of Densification mechanism appears during the intermediate and Final sintering stages. During this last stage, the deformation mechanism is similar to the one involved during creep of dense ZrC0.94O0.05 ceramics. The comparison of Densification and creep strain rates seems to show that no specific effects strongly enhance strain rate during the Final Densification stage of Spark Plasma Sintering.