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  1. No Access

    Article

    Natural superhydrophilicity of sol–gel derived SiO2–TiO2 composite films

    Sol–gel SiO2–TiO2 mixed films have been deposited from a polymeric SiO2 solution and either a polymeric TiO2 mother solution (MS) or a derived TiO2 crystalline suspension (CS). The chemical and structural composi...

    S. Permpoon, G. Berthomé, B. Baroux, J. C. Joud, M. Langlet in Journal of Materials Science (2006)

  2. No Access

    Article

    Photo-Induced Hydrophilicity of TiO2 Films Deposited on Stainless Steel via Sol-Gel Technique

    The photo-induced hydrophilicity of TiO2 films deposited on stainless steel substrates and silicon wafers using two different sol-gel routes has been investigated. The results indicate that crystalline titanium o...

    S. Permpoon, M. Fallet, G. Berthomé, B. Baroux… in Journal of Sol-Gel Science and Technology (2005)

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    Article

    Analysis of doped rodlike surface fibers in Al–Al3Ni eutectic alloys

    Undoped and Cr doped rodlike Al-Al3Ni eutectics have been studied as initial alloys of Raney nickel catalysts. The aim was to localize the dopant at different stages of the catalyst life: in the initial alloy, af...

    E. Rosell-Laclau, M. Durand-Charre, J-C. Joud in Journal of Materials Research (1995)

  4. No Access

    Article

    An auger investigation of oxygen-enhanced tin segregation on a liquid Pb−Sn alloy

    Auger measurements of the surface composition have been performed on solid and molten Pb-5at%Sn alloys. They confirm the theoretical predictions that, in the absence of oxygen, liquid or solid alloys exhibit n...

    J. C. Joud, E. Ricci, A. Passerone in Il Nuovo Cimento D (1995)

  5. No Access

    Article

    Structural Transformation During the Epitaxial Growth of a System with a Large Misfit: MBE Study of Ni on Au(100)

    The growth of Ni on Au(100) has been investigated by MBE. It has been found that a metastable BCT Ni(100) phase is coherent with the substrate up to a thickness of 5 ML. Then a structural transformation analog...

    B. Gilles, A. Marty, G. Patrat, J.L. Vassent, J.C. Joud… in MRS Online Proceedings Library (1993)

  6. No Access

    Article

    Single-Crystal AU-NI Solid Solutions Grown by MBE

    Epitaxial solid solutions Au1-x Nix (100) have been obtained at room temperature on Au(100) substrates by the MBE technique. The layers are 10 nm-thick and the composition x has been varied up to 0.37. A large st...

    A. Marty, B. Gilles, G. Patrat, J. C. Joud, A. Chamberod in MRS Online Proceedings Library (1992)

  7. No Access

    Article

    Metallurgical structure and alkali leaching of the Al/Al3Ni eutectic

    Raney-Nickel catalysts were prepared by aluminium leaching out of aluminium-rich binary Al-Ni alloys. In order to understand the behaviour of NiAl3 during alkali leaching, different metallurgical structures of th...

    P. Colin, S. Hamar-Thibault, J. C. Joud in Journal of Materials Science (1992)

  8. No Access

    Article

    Surface Wetting By A Second Phase In A Liquid Binary Alloy

    The surface tension variations of a binary two phases liquid mixture are discussed using the square gradient approximation to the free energy functional. The case of a weakly undersaturated solution at a tempe...

    J.C Joud in MRS Online Proceedings Library (1991)

  9. No Access

    Article

    The Growth of Ni Overlayers on Au(100) Buffers Deposited on GaAs(100) and MgO(100) Substrates.

    High quality single-crystal Au(100) buffers have been grown on GaAs(100) or MgO(100) substrates via a thin bcc Fe(100) nucleation layer. Using RHEED, LEED and Auger spectroscopy the growth of Ni overlayers at ...

    B. Gilles, J. Eymery, A. Marty, J. C. Joud, A. Chamberod in MRS Online Proceedings Library (1991)

  10. No Access

    Chapter and Conference Paper

    Equilibrium surface segregation in solid binary alloys

    As briefly shown, various refined calculations are currently being developped to study surface segregation. In this case, a qualitative agreement is observed between experimental and theoretical results. To co...

    J.C. Joud in Capillarity Today (1991)

  11. No Access

    Article

    Thermodynamic approach to competition between surface and volume reactions

    Using the monolayer model, a thermodynamic approach is suggested in order to compare the surface reactivity to the volume reactivity under both equilibrium and nonequilibrium conditions (sorption and chemical ...

    A. Sanfeld, A. Passerone, E. Ricci, J. C. Joud in Il Nuovo Cimento D (1990)

  12. No Access

    Article

    Influence of additions on the structure of rapidly solidified Ni2Al3 alloys

    Raney nickel catalysts are prepared from Ni−Al alloys. In order to test the influence of the microstructure of the precursor alloys, we prepared homogenized and microcrystallized (NiM)2Al3 alloys with M=Cr, Cu, F...

    J. Gros, S. Hamar-Thibault, J. C. Joud in Journal of Materials Science (1989)

  13. No Access

    Article

    The wetting of carbon by aluminium and aluminium alloys

    The contact angle made by molten aluminium with vitreous carbon was measured by the sessile drop method in vacuum at temperatures up to 1100° C. The effect on wetting behaviour of the oxide layer on the molten...

    N. Eustathopoulos, J. C. Joud, P. Desre, J. M. Hicter in Journal of Materials Science (1974)