Universite Dé Lorraine

L'air Liquide, Soci&#xe9;t&#xe9; Anonyme Pour L'etude Et L'exploitation Des Proc&#xe9;d&#xe9;s Georges Claude

Centre National De La Recherche Scientifique

Safran Aircraft Engines

Safran

Université De Limoges

Michel Vilasi

Stéphane Mathieu

Thierry Mazet

Pascal Del-Gallo

Laurent Prost

Stéphane Knittel

Nicolas Ramenatte

Marc Wagner

Thierry Chartier

Michael Podgorski

Nicolas Richet

Patrice Berthod

Sébastien Doublet

Fabrice Rossignol

Léo Portebois

Sebastien Doublet

Damien Sallais

Stephane Mathieu

Leo Portebois

A process for the deposition of a coating on at least a part of a metallic substrate, a) mixing a liquid and a powder having particles of a metallic material to be deposited and particles of a pickling agent, so as to prepare a suspension, b) application of the suspension prepared in step a) to at least a part of the surfaces of the metallic substrate, so as to obtain a substrate-suspension assembly, c) carrying out a heat treatment of the assembly which includes heating at a first temperature of at least 500° C. and heating at a second temperature greater than the first temperature, and d) recovery of a substrate coated, at least in part, with a coating, the pickling agent being a halogenated compound and the suspension having from 10% to 60% of the pickling agent, with respect to the total weight of the powder.

Method for depositing a coating from an improved composition suspension

A part include a refractory alloy including a niobium matrix having metal silicide inclusions present therein, the surface of the part being coated by a protective coating, the protective coating including a phase having the following stoichiometry: (NbTi)MCrSiXwhere M designates Fe, Co, or Ni, X designates one or more other elements that might be present, x lies in the range 0 to 1, x lies in the range 5 to 8.5, and the sum &#x3b2;+&#x3b3; lies in the range 3 to 7; or NbM'SiX&#x2032;&#x2032; where M&#x2032; designates Fe, Co, or Ni, X&#x2032; designates one or more other elements that might be present, &#x3b7; lies in the range 3.2 to 4.8, and &#x3b8; lies in the range 6 to 8.

Method for manufacturing a part coated with a protective coating

A turbine engine part includes at least a substrate, and present on the substrate, a ceramic coating for protection against calcium and magnesium aluminosilicates, the ceramic coating including AlOat a molar content lying in the range 33% to 49%, YAlOat a molar content lying in the range 21% to 53%, and yttria-stabilized zirconia at a molar content lying in the range 13% to 31%.

Turbine engine part coated with a protective ceramic coating, method for manufacturing and for using such a part

Process for depositing a coating on a substrate having at least one cavity, comprising a step of mixing ground powders of an activating agent and a powder of the metal or of the alloy to be deposited on the substrate that were ground in step a) and a liquid so as to form a suspension, and a step of applying the suspension to the portion of the substrate to be coated.

Method for depositing a corrosion-protection coating from a suspension

Process for depositing a corrosion-protection coating on at least one portion of the surfaces of a metallic substrate having at least one cavity with an equivalent diameter e&#x3c;2 mm and a length/width ratio of greater than 150, using an aqueous suspension comprising powder of the metal to be deposited on the substrate combined with an agent for protecting the surface of the metal powder, a diluent, and at least one additive, the particles of the suspension each having an equivalent diameter d such that d&#x2264;e/10.

Method for depositing an anti-corrosion coating

A method for manufacturing a part coated with a protective coating includes: forming a protective coating across all or part of the surface of a part, wherein the part includes a refractory alloy including a niobium matrix containing metal silicide inclusions, wherein the protective coating is formed by a pack carburization method from a cement including: i. a mixture A of (NbTi)MCrSiand MCrSi where M denotes Fe, Co or Ni and x is between 0 and 1, or ii. a mixture B of M'Si, NbSiand NbM&#x2032;Siwhere M&#x2032; denotes Fe, Co or Ni.

Process for producing an element comprising a multilayer architecture, the layers of which comprise primary channels on their upper faces, said process comprising the following successive steps:

Method for producing a multilayer element having a protective coating

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Bouxieres Aux Dames, France

Michel Vilasi