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  1. No Access

    Article

    Densification mechanism involved during spark plasma sintering of a codoped α-alumina material: Part I. Formal sintering analysis

    Spark plasma sintering (SPS) of a codoped α-alumina powder has been investigated at temperatures between 850 and 1200 °C. The “grain size versus relative density” trajectory showed a significant grain growth a...

    G. Bernard-Granger, C. Guizard in Journal of Materials Research (2009)

  2. No Access

    Article

    Preferential Oxygen Transport in Nanophase Mesoporous Ceramic Ion Conducting Membranes

    Recent data from the literature dealing with the influence on oxygen transport of porous nanophase ion conducting ceramics are reviewed, and then transposed to the design of mesoporous nanophase ceria-based me...

    C. Guizard, C. Levy, L. Dalmazio, A. Julbe in MRS Online Proceedings Library (2003)

  3. No Access

    Article

    Synthesis and Texture of Mesophase Templated Silica Layers Seeded with Nanoparticles

    Mesophase templated silica layers seeded with magnetic or non magnetic nanoparticles are prepared. The study of the interactions between the nanoparticles and the others compounds of the synthesis solution is ...

    M. Klotz, A. Ayral, A. Van Der Lee, C. Guizard… in MRS Online Proceedings Library (1999)

  4. No Access

    Article

    Potentialities of an Innovative Technique Like 129Xe NMR and of Saxs for the Characterization of Microporous Sol-Gel Derived SiO2

    Addition of surfactants in TEOS derived sols leads to micro- or mesoporous materials whose porous texture can be varied by changing the surfactant quantity and/or chain length. This series of materials, with a...

    L.C. De Menorval, A. Julbe, H. Jobic, J.A. Dalmon… in MRS Online Proceedings Library (1996)

  5. No Access

    Article

    Tailoring the Microstructure of Polyimide-Silica Materials Using the Sol-Gel Process

    Polyimide-silica materials have been prepared via the sol-gel process by mixing tetramethoxysilane with a polyamic acid. Two polyamic acids have been used. The first is obtained with an equimolar mixture of ox...

    J. C. Schrotter, M. Smaihi, C. Guizard in MRS Online Proceedings Library (1996)

  6. No Access

    Article

    Functional Phosphate Alkoxysilanes for Facilitated Transport Membrane Materials

    Sol-gel processing of heteropolysiloxanes containing phosphate groups has been investigated for potential applications in the synthesis of facilitated transport solid membrane. The co-hydrolysis-condensation o...

    N. Hovnanian, M. Smaihi, A. Cardenas, C. Guizard in MRS Online Proceedings Library (1996)

  7. No Access

    Article

    A New Category of Membranes Exploiting Potentiality of Organic/Inorganic Hybrid Materials

    Organic/inorganic hybrid materials offer specific advantages for the realization of artificial membranes exhibiting high selectivity and flux as well as good thermal and chemical resistances. Preparations of h...

    C. Guizard, P. Heckenbenner, J. C. Schrotter… in MRS Online Proceedings Library (1996)

  8. No Access

    Article

    Liquid Crystal Templating Effects on Silica Gels Synthesized using Quaternary Ammonium Surfactants

    The use of lyotropic liquid crystal phases is a promising tool in tailoring the porous structure of inorganic gels. In this work, we examine the effect of hexagonal liquid crystal phases produced with quaterna...

    T. Dabadie, A. Ayral, C. Guizard, L. Cot, J. C. Robert… in MRS Online Proceedings Library (1994)

  9. No Access

    Article

    Hydrolysis of Zirconium Propoxide by an Esterification Reaction

    Zirconium propoxide hydrolysis was performed with the help of an esterification reaction using acetic acid. Products, obtained according to the value of hydrolysis ratio, are successively crystals, sols and ge...

    I. Laaziz, A. Larbot, C. Guizard, A. Julbe, L. Cot in MRS Online Proceedings Library (1992)

  10. No Access

    Article

    Monitoring of Heteropolysiloxane Thin film Properties Using Rheological and Acoustic Characterization Methods

    This paper emphasizes on the mechanical characterization of heteropolysiloxane (HPS) derived materials using rheology and acoustic microscopy methods. Dynamic rheological measurements have been performed at th...

    C. Guizard, P. Lacan, J. M. Saurel, F. Hajoub, L. Cot in MRS Online Proceedings Library (1992)

  11. No Access

    Article

    Sol-To-Gel Transition in Reversed Micelles Microemulsions I. A New Route to Produce Monolithic Metal-Organic Derived Gels

    A new versatile method to prepare monolithic metal-organic derived gels is presented in which the sol-to-gel transition is achieved through hydrolysis and condensation reactions in a reversed micelles microemu...

    C. Guizard, M. Stitou, A. Larbot, L. Cot, J. Rouviere in MRS Online Proceedings Library (1988)

  12. No Access

    Article

    Microporous Layers from Sol-Gel Techniques

    A. Larbot, J. A. Alary, J. P. Fabre, C. Guizard, L. Cot in MRS Online Proceedings Library (1986)