Fabrication and technological properties of nanoporous spinel/forsterite/zirconia ceramic composites

M.M.S. Wahsh R.M. Khattab N.M. Khalil Fanny Gouraud 1 Marc Huger 2 Thierry Chotard 2
1 SPCTS - Science des Procédés Céramiques et de Traitements de Surface
2 Axe 1 : procédés céramiques
SPCTS - Science des Procédés Céramiques et de Traitements de Surface
Abstract : 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.
Keywords : Nanoporous Ceramic matrix composites Mechanical properties Thermal diffusion Microstructure
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https://hal-unilim.archives-ouvertes.fr/hal-00946201
Contributeur : Pamela Bathias <>
Soumis le : jeudi 13 février 2014 - 15:04:53
Dernière modification le : mercredi 14 février 2018 - 16:02:03

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M.M.S. Wahsh, R.M. Khattab, N.M. Khalil, Fanny Gouraud, Marc Huger, et al.. Fabrication and technological properties of nanoporous spinel/forsterite/zirconia ceramic composites. Materials and Design, Elsevier, 2014, 53, pp.561-567. ⟨10.1016/j.matdes.2013.07.059⟩. ⟨hal-00946201⟩

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