Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Safran

Mathieu Soulier

Jean-Paul Garandet

Guilhem Roux

Virginie Jaquet

Amar Saboundji

Mirna Bechelany

Richard Laucournet

Mathieu Boidot

Mathieu Opprecht

Fernando Lomello

Christelle Navone

Natalio Mingo Bisquert

Maya Marinova-atanas

Amandine Neri

Alexandre Montani

Marie-Reine Manlay

Camille Flament

A method for manufacturing an aluminium alloy part by additive manufacturing comprising a step during which a layer of a mixture of powders is melted locally and then solidified, wherein the mixture of powders comprises: —first particles—comprising at least 80 wt % of aluminium and up to 20 wt % of one or more additional elements, and —second particles—of yttria, the volume percentage of second particles in the mixture of powders preferably ranging from 0.5% to 5%.

Method for manufacturing an aluminium alloy part by additive manufacturing and aluminium alloy part obtained according to the method

Method for manufacturing an aluminium alloy part by additive manufacturing comprising a step during which a layer of a mixture of powders is locally melted and then solidified, characterised in that the mixture of powders comprises:

Method for manufacturing an aluminium alloy part by additive manufacturing from a mixture of powders containing yttria-stabilized zirconia

A process for coating a refractory alloy part is provided and includes coating an area of a refractory alloy part by means of a treatment composition including a type of preceramic polymer and a solvent, and heat treating the part coated with the treatment composition. The heat treating partially converts the preceramic polymer and forms a ceramic coating obtained by conversion, the ceramic coating protecting the refractory alloy from oxidation. The treatment composition also includes active fillers to form an alloy coating on a surface of the part by solid diffusion in addition to the ceramic coating obtained by conversion, and the alloy coating generates a protective oxide layer when subjected to oxidizing conditions.

Ceramic coating for foundry core

A process for coating a part by chemical vapor diffusion is provided and includes placing a powder mixture in a chamber, immersing the part partially in the powder mixture, and applying a heat treatment to the part. The powder mixture includes a first component and a second component forming a gaseous compound during the heat treatment so as to allow deposition of the second component on the part. The part includes a metal refractory allow and the second component forms a solid diffusion alloy by solid diffusion with a metal species of the refractory metal alloy to generate a coating. The solid diffusion allow generates a passivating oxide layer when subjected to oxidizing conditions.

Coating for refractory alloy part

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Saint Jean de Moirans, France

Mathieu Soulier