Commissariat a L'energie Atomique

Commissariat a L'energie Atomique Et Aux Energies Alternatives

Centre National De La Recherche Scientifique

Université Pierre Et Marie Curie (Paris 6)

Philippe Belleville

Philippe Prene

John David Bass

Pierrick Buvat

Clément Sanchez

Pierre Montmeat

Herve Floch

Karine Valle

Bruno Pintault

Philippe Boy

Yves Montouillout

Clement Sanchez

Luc Bianchi

Alexandre Allemand

Yann Le Petitcorps

Lionel Hairault

Philippe Cormont

Franck Pereira

Franck Blein

Sébastien Lambert

David Guenadou

Romain Billard

Mickael Dolle

Joël Toulc'Hoat

Philippe Gacoin

Sophie Kaladgew

Herv&eacute; Floch

Axel Dieraert

Thomas Richardot

Chrystel Laberty

Sandrine Thomas

Mathilde Pfiffer

Xavier Le Guevel

Céline Bondoux

Robert Jerisian

Christophe Boscher

Fabien Pilon

Laurence Beaurain

Olivier Rondeau

Frédéric Thery-Merland

Séverine Lebrette

Karine Wittmann-Teneze

A composition which can be photopolymerized to make a part consisting of an oxide ceramic, or a hybrid part comprising at least one oxide ceramic and organic constituents, by a stereolithographic technique, the composition comprising: at least one photopolymerizable organic compound; at least one photo-initiator; at least one precursor of the oxide ceramic wherein the composition comprises from 25% to 70% by mass, relative to the total mass of the composition, of the at least one precursor of the oxide ceramic; and wherein the at least one precursor of the oxide ceramic comprises a mixture comprising a nanometric powder of the oxide ceramic, and at least one other element selected from a micrometric powder of the oxide ceramic and a pre-ceramic compound of the oxide ceramic.

Composition and method for making parts consisting of oxide ceramics or hybrid parts by a stereolithographic technique

Organic-inorganic hybrid nanofibres comprising two phases: A membrane and an electrode comprising said nanofibres. A fuel cell comprising said membrane and/or said electrode. A method of preparing said nanofibres by electrically assisted extrusion (electrospinning).

Organic-inorganic hybrid nanofibres having a mesoporous inorganic phase, preparation thereof by electrospinning, membrane, electrode, and fuel cell

A method for improving the properties of resistance to laser flux of an optical component, comprising a step consisting in bringing the component into contact with an aqueous solution comprising at least one hydroxide of an alkaline metal or an alkaline earth metal in a quantity of between 5 and 30 mass % and having a temperature T of between 50 and 100&#xb0; C.

Method for improving the resistance to laser flux of an optical component

The invention relates to a method for preparing a sol-gel solution which can be used to prepare a barium titanate ceramic doped with hafnium and/or with at least one lanthanide element, comprising the following steps:

Method for preparing a sol-gel solution which can be used for preparing a barium titanate ceramic doped with hafnium and/or with at least one lanthanide element

The invention relates to a method for preparing a material based on an aluminosilicate selected from barium aluminosilicate BAS, barium-strontium aluminosilicate BSAS, and strontium aluminosilicate SAS, said aluminosilicate consisting of aluminosilicate with a hexagonal structure, characterised in that it includes a single sintering step in which a mixture of powders of precursors of said aluminosilicate, including an aluminium hydroxide Al(OH)powder, are sintered by a hot-sintering technique with a pulsed electric field SPS; whereby a material based on an aluminosilicate, said aluminosilicate consisting of an aluminosilicate with a hexagonal structure is obtained. The material based on an aluminosilicate prepared by said method can be used in a method for preparing a composite material consisting of an aluminosilicate matrix reinforced by reinforcements made of metalloid or metal oxide.

Method for preparing a material made from aluminosilicate and method for preparing a composite material having an aluminosilicate matrix

The present invention relates to a method for treating a surface of an object which comprises the steps consisting of bringing the surface to be treated in contact with a diffusion intermediate and then maintaining said surface to be treated in contact with said diffusion intermediate without any movement relatively to each other, said diffusion intermediate being impregnated with a corrosive solution prior to contacting or during said contacting. The present invention also relates to a device implemented during such a method.

Method for treating a surface and device implemented

The invention relates to a method for preparing sols of metal oxides, with an aqueous component, which are stable over time and which notably allow the making of thin films having both remarkable optical and abrasion resistance properties. This method comprises: (i) replacing with water all or part of the alcohol or of the alcohols present in an alcoholic sol of a metal oxide, with a neutral or basic pH, and optionally (ii) adjusting the pH of the thereby obtained aqueous or partly aqueous sol to a value of at least 8. The invention also relates to a method for making films from these sols and, in particular, thin films with optical properties and resistant to abrasion. Applications: making optical components for power lasers, making optical fibers, cathodic tubes, etc.

Preparation of stable metal oxide sols, notably for making thin abrasion-resistant films with optical properties

The present invention relates to a magnesium oxide-based (MgO) inorganic coating intended to electrically insulate semiconductive substrates such as silicon carbide (SiC), and to a method for producing such an insulating coating. The method of the invention comprises the steps of preparing a treatment solution of at least one hydrolysable organomagnesium compound and/or of at least one hydrolysable magnesium salt, capable of forming a homogeneous polymer layer of magnesium oxyhydroxide by hydrolysis/condensation reaction with water; depositing the treatment solution of the hydrolysable organomagnesium compound or of the hydrolysable magnesium salt, onto a surface to form a magnesium oxide-based layer; and densifying the layer formed at a temperature of less than or equal to 1000&#xb0; C.

MgO-based coating for electrically insulating semiconductive substrates and production method thereof

Process for producing at least one nanoporous layer of nanoparticles chosen from nanoparticles of a metal oxide, nanoparticles of metal oxides, and mixtures of said nanoparticles, on a surface of a substrate, in which at least one colloidal sol, in which said nanoparticles are dispersed and stabilized, is injected into a thermal plasma jet which sprays said nanoparticles onto said surface. Nanoporous layer and device, especially a separation device, comprizing said layer.

Process for producing a nanoporous layer of nanoparticles and layer thus obtained

The invention relates to a process for preparing a stable sol-gel solution. The solution may be used to form coating materials for metallic substrates, such as silver-based substrates for use in mirrors. The process includes the steps of preparing a sol-gel solution by bringing one or more molecular metal and/or metalloid precursors into contact with a medium comprising an organic solvent, adding at least one mercaptoorganosilane compound to the solution, hydrolyzing the solution obtained, and then adding one or more complexing agents to the solution.

Process for preparing a sol-gel solution and use of this solution to form a coating to protect a substrate having a metal surface

An organic-inorganic hybrid material comprising two phases: Membrane and electrode comprising this material. Fuel cell comprising at least one such membrane and/or at least one such electrode. Process for preparing said hybrid material.

Organic-inorganic hybrid material comprising a mineral mesoporous phase and an organic phase, a membrane and fuel cell

A method of preparing a sol of lead zirconium titanate, known as PZT, of formula PbZrTiOwith 0.45&#x2266;x&#x2266;0.7, comprises the steps of:

Method of preparing a stable lead zircon-titanate sol and method for preparing films based on same

This invention relates to a method of antiglare treatment of an organic or inorganic substrate, particularly, sensitive to temperature increases such as phosphate substrates and to a material having antiglare properties that can be obtained by the method of the invention. The invention method comprises a step of deposition a layer of a fluorinated polymer with a low refractive index onto the substrate from a deposition solution that includes said fluorinated polymer. The invention method can be applied to the manufacture of a pockels cell.

Method for antiglare treatment and material having antiglare properties

A method for fabricating optical components by replication using a matrix, and optical components obtained by such method are described. The optical components are diffractive optical components, such as light-diffraction networks which are used in optical devices in order to divert a light beam according to a preferential order of diffraction.

Method for making optical components by replication

The invention relates to an inorganic polymer material based on tantalum oxide, notably with a high refractive index and mechanically resistant to abrasion, its method of manufacture, in particular making use of precursors based on chlorinated derivatives of tantalum, and optical materials such as antiglare materials and reflecting materials manufactured from this material.

Inorganic polymer material with tantalic acid anhydride base, in particular with high refractive index, mechanically abrasionproof, method of manufacture, optical materials comprising such material

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Philippe Belleville