F. Gouraud | Université de Limoges (original) (raw)
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Indian Institute of Engineering Science and Technology, Shibpur
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Papers by F. Gouraud
Journal of the European Ceramic Society, 2014
Solid State Sciences, 2015
Stable glasses are successfully synthesized in the TeO 2 -GeO 2 -ZnO system at 850°C by the meltq... more Stable glasses are successfully synthesized in the TeO 2 -GeO 2 -ZnO system at 850°C by the meltquenching method and the glass forming domain is determined in the TeO 2 -rich part of the diagram.
Materials & Design, 2014
In this work, nanoporous spinel/forsterite/zirconia ceramic composites were fabricated at 1600°C ... more In this work, nanoporous spinel/forsterite/zirconia ceramic composites were fabricated at 1600°C for 2 h. The influence of zirconia content (up to 10 mass%) on the technological properties, nanopores formation, phase compositions, microstructure and thermal diffusivity of nanoporous ceramic composites was investigated. Nanospinel and nanoforsterite powders were synthesized via a modified co-precipitation and sol-gel techniques, respectively. Results indicated that apparent porosity of the fired nanoporous ceramic composites is mostly in the range 14.26-56.14% with the average pores diameter 35.8 nm. Using of nanopowders (spinel and forsterite) as the staring materials were achieved high mechanical (cold crushing strength $ 235-164 MPa) and elastic (Young's modulus $ 123.6-4.5 GPa) properties of the prepared nanoporous ceramic composites. Microstructure analysis exhibited all of the crystalline phases and pores of the nanoporous ceramic composites are in the nanosize (35-40 nm). These nanoporous ceramic composites are promising porous ceramic materials for using in advanced applications due to their excellent combination properties.
ACS Applied Materials & Interfaces, 2014
Nanocrystalline magnesium aluminate (MA) spinel powder produced through a coprecipitation method ... more Nanocrystalline magnesium aluminate (MA) spinel powder produced through a coprecipitation method and calcined at 900°C for 1 h was added to magnesia−zirconia composite in the range of 0−25 mass % and sintered at 1600°C for 2 h. Scanning electron microscope (SEM) and X-ray diffraction (XRD) techniques were used for studying the microstructure and the phase composition of the sintered composites. Bulk density, apparent porosity, volume shrinkage, and Young's modulus of the sintered composites were also investigated. The results revealed that the nanospinel addition up to 20 mass % increases the sintering ability and Young's modulus of the composite bodies. Microstructure showed that the presence of nanospinel and zirconia in the triple point between magnesia grains closed the gaps in the ceramic matrix and enhanced the compactness of the composites.
Journal of the European Ceramic Society, 2014
Solid State Sciences, 2015
Stable glasses are successfully synthesized in the TeO 2 -GeO 2 -ZnO system at 850°C by the meltq... more Stable glasses are successfully synthesized in the TeO 2 -GeO 2 -ZnO system at 850°C by the meltquenching method and the glass forming domain is determined in the TeO 2 -rich part of the diagram.
Materials & Design, 2014
In this work, nanoporous spinel/forsterite/zirconia ceramic composites were fabricated at 1600°C ... more In this work, nanoporous spinel/forsterite/zirconia ceramic composites were fabricated at 1600°C for 2 h. The influence of zirconia content (up to 10 mass%) on the technological properties, nanopores formation, phase compositions, microstructure and thermal diffusivity of nanoporous ceramic composites was investigated. Nanospinel and nanoforsterite powders were synthesized via a modified co-precipitation and sol-gel techniques, respectively. Results indicated that apparent porosity of the fired nanoporous ceramic composites is mostly in the range 14.26-56.14% with the average pores diameter 35.8 nm. Using of nanopowders (spinel and forsterite) as the staring materials were achieved high mechanical (cold crushing strength $ 235-164 MPa) and elastic (Young's modulus $ 123.6-4.5 GPa) properties of the prepared nanoporous ceramic composites. Microstructure analysis exhibited all of the crystalline phases and pores of the nanoporous ceramic composites are in the nanosize (35-40 nm). These nanoporous ceramic composites are promising porous ceramic materials for using in advanced applications due to their excellent combination properties.
ACS Applied Materials & Interfaces, 2014
Nanocrystalline magnesium aluminate (MA) spinel powder produced through a coprecipitation method ... more Nanocrystalline magnesium aluminate (MA) spinel powder produced through a coprecipitation method and calcined at 900°C for 1 h was added to magnesia−zirconia composite in the range of 0−25 mass % and sintered at 1600°C for 2 h. Scanning electron microscope (SEM) and X-ray diffraction (XRD) techniques were used for studying the microstructure and the phase composition of the sintered composites. Bulk density, apparent porosity, volume shrinkage, and Young's modulus of the sintered composites were also investigated. The results revealed that the nanospinel addition up to 20 mass % increases the sintering ability and Young's modulus of the composite bodies. Microstructure showed that the presence of nanospinel and zirconia in the triple point between magnesia grains closed the gaps in the ceramic matrix and enhanced the compactness of the composites.