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

Stéphane Mathieu

Marc Wagner

Thierry Chartier

Michel Vilasi

Thierry Mazet

Stéphane Knittel

Pascal Del-Gallo

Michael Podgorski

Laurent Prost

Nicolas Richet

Patrice Berthod

Nicolas Ramenatte

Fabrice Rossignol

Sébastien Doublet

Léo Portebois

Damien Sallais

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

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

Growing community of inventors

Villers les Nancy, France

Stéphane Mathieu