Safran Helicopter Engines

Safran

Messier-bugatti-dowty

Snecma

Turbomeca

Fabrice Crabos

Amar Saboundji

Justine Menuey

Sarah Hamadi

Julien Gurt Santanach

Alain Viola

Juliette Hugot

Yann Danis

Julien Esteban

Quentin Robert Marcel Bonnardel

Cyril Roger Vernault

André Hubert Louis Malie

The present invention relates to a method for manufacturing a part, comprising the steps of chemically etching, in a wet acid medium, at least a portion of a surface of a substrate made of a monocrystalline superalloy, comprising at least one element chosen from rhenium and ruthenium, the substrate having a γ-γ' phase, the substrate having an average mass fraction of rhenium and/or ruthenium greater than or equal to 3%, the chemical etching being done in such a way that the average mass fraction of rhenium and/or ruthenium over the portion of the surface of the substance is less than 2%, and a step of depositing on the portion of the substrate a protective coating having a γ-γ′ phase and an average mass fraction of rhenium and/or ruthenium of less than 1%.

Aircraft part made of superalloy comprising rhenium and/or ruthenium and associated manufacturing method

The invention relates to a cold expansion device () for work hardening a through bore () in a turbine engine part (), comprising at least one chuck () supporting a burnisher () and a means () for pushing the chuck () in an axial direction, and is characterised in that it comprises at least: —a tubular guide () configured to guide the burnisher () to the bore (), —a first magnetic attachment means () arranged at a free end () of the chuck (), —the burnisher (), comprising a work surface () and an end () comprising second magnetic attachment means () complementary to the first magnetic attachment means (), and in that the axial pushing means () is configured to push the burnisher through the bore () until it emerges from stud bore.

Device and method for cold expansion of through bore

A process for manufacturing a turbomachine part coated with a thermal barrier, includes manufacturing the part by additive manufacture; electrophoretic depositing the part of a layer including particles of a ceramic material; consolidating the layer by heat treatment to obtain a ceramic coating.

Method for producing a thermal barrier on a part of a turbomachine

Subjecting an aluminum or aluminum alloy substrate to anti-corrosion and anti-wear treatment that is applicable in particular in the field of aviation for protecting certain mechanical parts of airplanes or helicopters that are subjected simultaneously to corrosion and to wear, including applying to the substrate, a sol-gel treatment step forming a sol-gel layer; and after the sol-gel treatment step, a hard oxidation step forming a hard oxide layer.

Method of treatment against corrosion and against wear

An aircraft engine-part including at least a metal substrate and a protective coating for protection against erosion that is present on the substrate, the coating including at least one phase including at least chromium at an atom content greater than or equal to 45% and carbon at an atom content lying in the range 5% to 20%, the phase including CrCand CrCchromium carbides. A method of fabricating such a part in which electroplating is used to deposit a coating composition on the part and the part is subjected to heat treatment at a temperature lying in the range 250&#xb0; C. to 70&#xb0; C.

Aircraft engine part including a coating for protection against erosion, and a method of fabricating such a part

A rotor-stator assembly for a gas turbine engine, the assembly including a rotor having a layer of ceramic material forming an abrasive coating deposited on its tip, the layer being constituted mainly by zirconia and possessing a void ratio less than or equal to 15%, and a stator arranged around the rotor and provided facing the tip of the rotor with a layer of ceramic material forming an abradable coating, the layer being constituted mainly by zirconia possessing a void ratio lying in the range 20% to 50% with pores having size less than or equal to 50 &#x3bc;m.

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Assat, France

Fabrice Crabos