Université Paul Sabatier (Toulouse III)

Centre National De La Recherche Scientifique

Safran Aircraft Engines

Snecma

Safran

Electricite De France

Safran Ceramics

Institut National Polytechnique De Toulouse

Institut National Polytechnique

Irt Antoine De Saint Exupery

Mecaprotec Industries

Norimat

Florence Ansart

Philippe Charles Alain Le Biez

Serge Georges Vladimir Selezneff

Jean-Pierre Bonino

Sandrine Duluard

André Hubert Louis Malie

Arnaud Louis Gabriel Fregeac

Claude Gilbert Jean-Pierre Estournes

Justine Menuey

Pierre-Louis Taberna

Claude Estournes

Sarah Hamadi

Aurélien Joulia

Stéphane Knittel

Gautier Mecuson

Romain Epherre

Julien Esteban

Fabrice Mauvy

Christel Laberty-Robert

Andre Hubert Louis Malie

Nicolas Laval

Pierre Bares

Yannick Beynet

Léa Rébecca Gani

Jean-Claude Grenier

Hélène Cerda

Celine Viazzi

Mathieu Marrony

Julien Pierre Wagner

Guillaume Pujol

Pascal Lenormand

Justine Fenech

Fanny Grumbach

Aude Paillassa

Elodie Marie Delon

Mohsine Zahid

Mathilde Rieu

Marie-Joëlle Menu

Olivier Jaubert

Julian Dailly

Jean Puig

Philippe Stevens

Céline Viazzi

Manuel Gaudon

Céline Gazeau

Aurelien Joulia

Helene Cerda

Jean-Marc Bassat

Elodie Xuereb

Rudina Bleta

Marie Gressier

Marie-Laure Fontaine

Romain Noiville

A process for manufacturing an abradable layer, includes compressing a powder composition including at least micrometric ceramic particles having a number-average form factor greater than or equal to 3, a mass content of said micrometric ceramic particles in the powder composition being greater than or equal to 85%, the form factor of a particle being defined as the ratio [largest dimension of the particle]/[largest cross-sectional dimension of the particle], and sintering the powder composition thus compressed to obtain the abradable layer, wherein a temperature imposed during sintering, the sintering time and the compression pressure applied are selected so as to obtain a volume porosity rate of the abradable layer greater than or equal to 20%.

Method for manufacturing an abradable layer

A method for impregnating an oxide fibre roving with a matrix of alumina and silica includes a introducing an oxide fibre roving into an impregnation bath, wherein the impregnation bath is prepared by sol-gel process and includes a silica precursor in the form of a hybrid polymeric sol, an alumina precursor in the form of a colloidal sol and ceramic particles.

Pre-impregnated rovings for composite material

A method for forming a cathodic protection coating on a substrate forming a turbomachine part, includes deposition, on the substrate, of particles for cathodic protection of the substrate, this deposition being performed by electrophoresis from an organic electrolyte including the particles, and forming an inorganic matrix in pores of the deposit of particles produced in this way, including impregnating the deposit with an impregnation composition, drying heat treatment of the deposit impregnated by the impregnation composition, and densifying the deposit by mechanical compacting, after the drying heat treatment, in order to make the deposit electrically conductive.

Method for forming a cathodic protection coating on a turbomachine part

A turbine engine part coated in at least a first ceramic layer forming a thermal barrier and including a ceramic material with first ceramic fibers dispersed in the first layer. The first layer may have a chemical composition gradient between a material for forming a thermal barrier and a material for providing protection against calcium and magnesium aluminosilicates, which is present at a greater content in an outer zone of the first layer, and/or the first layer may be porous and may present a porosity gradient such that an outer portion of the first layer presents lower porosity.

Turbine engine part coated in a thermal barrier, and a method of obtaining it

A method of localized repair to a damaged thermal barrier, the method including subjecting a part coated in a damaged thermal barrier to electrophoresis treatment, the part being made of an electrically conductive material, the damaged thermal barrier including a ceramic material and presenting at least one damaged zone that is to be repaired, the part being present in an electrolyte including a suspension of particles in a liquid medium, the ceramic coating being deposited by electrophoresis in the damaged zone in order to obtain a repaired thermal barrier for use at temperatures higher than or equal to 1000&#xb0; C., the particles being made of a material different from the ceramic material present in the damaged thermal barrier.

Method for localised repair of a damaged thermal barrier

The invention relates to a method for manufacturing a thermal barrier protection covering a superalloy metal substrate and comprising at least one metal sublayer () and a ceramic layer () based on zirconia stabilized with yttrium having a column structure defining pores. The following steps are applied: Application to the protection of aeronautical protection parts.

Method for manufacturing a thermal-barrier protection and multilayer coating suitable for forming a thermal barrier

The present invention relates to a method for manufacturing a metal-oxide-based ceramic, including, in order, the step of inserting, into a flash sintering device, a nanocrystalline powder comprising crystallites and crystallite agglomerates of a ceramic of formula, ZrMO, where M is chosen from yttrium, scandium and cerium, or CeM'O, where M&#x2032; is chosen from gadolinium, scandium, samarium and yttrium, where x lies between 0 and 0.2, the powder having an average crystallite size of between 5 and 50 nm, an average crystallite agglomerate size of between 0.5 and 20 &#x3bc;m, and a specific surface area of between 20 and 100 m/g. The invention further includes the step of flash sintering the powder by applying a pressure of between 50 and 150 MPa, at a temperature of between 850&#xb0; C. and 1400&#xb0; C., for a time of between 5 and 30 minutes.

Production of self-supporting ceramic materials having a reduced thickness and containing metal oxides

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Labege, France

Florence Ansart