Safran Aircraft Engines

Snecma

Office National D'etudes Et De Recherches Aerospatiales

Pascal Fabrice Bilhe

Geoffrey Begue-Duthu

Pierre J Josso

Marie-Pierre Bacos

Laurent Paul Dudon

Andre Hubert Malie

Stéphane Knittel

Annie Pasquet

André Hubert Louis Malie

Vincent Guipont

Pascal Jacques Raymond Martinet

A method of fabricating a part by selectively melting powder is provided. The method includes: depositing a first layer of a first powder having a first element as its main element; depositing, on the first layer, a second layer of a second powder having a second element as its main element, which second element is different from the first element; and moving a first energy beam over the second layer, the energy delivered by the first beam serving to initiate an exothermic reaction between the first element and the second element, the energy given off by the exothermic reaction acting to locally melt together the first and second layers.

Method for producing a part by selective melting of powder

A part coated in a protective coating forms a thermal barrier and includes a ceramic first layer. The protective coating further includes a second layer present on the first layer and including a majority by weight of a first feldspar mineral having a melting temperature higher than or equal to 1010&#xb0; C. and presenting a thickness greater than or equal to 10 &#x3bc;m.

Part coated with a coating for protection against CMAS

The invention relates to a method for producing a nickel aluminide coating on a metal substrate. The method includes the following steps: a) coating the substrate with a nickel deposit; b) applying an aluminum sheet onto the nickel deposit from step a) so as to form an assembly made up of the substrate coated with the nickel deposit and the aluminum sheet; and c) subjecting said assembly to heat treatment at a temperature that is lower than the melting point of aluminum, and at a low pressure so as to induce a reaction between the aluminum and the nickel and thus form a &#x3b2;-NiAl nickel aluminide layer mounted on a nickel layer. The invention is particularly of use for protecting the materials used in turbines of aircraft engines.

Method for producing a nickel aluminide coating on a metal substrate, and part having one such coating

A method of marking the surface of a mechanical part with a predefined graphic having a holographic type effect, the method including using a laser source to apply a succession of laser pulses to the outside surface of a part for marking, with different masks being interposed between the laser source and the outside surface of the part, each mask having a particular pattern, each laser pulse having a power density of at least 20 MW/cmand a duration that is less than or equal to 100 ns.

Method for marking the surface of a mechanical part with a predefined graphical representation having a holographic effect

A method for assembling two blades of a turbomachine nozzle, includes positioning a first surface of a first blade and a second surface of a second blade facing one another, the first and second surfaces being spaced apart from one another by an assembly clearance, and vapor phase aluminizing the first and second surfaces so as to fill the assembly clearance.

Method for assembling two blades of a turbomachine nozzle

The invention relates to a method of surface marking a mechanical part with a predefined graphical representation, the method comprising using a laser source to apply a single laser pulse to an outside surface of a part for marking, with a mask being interposed between the laser source and the outside surface of the part, the mask having a predefined graphical representation, and the laser pulse having power flux density of at least 20 MW/cmand a duration less than or equal to 100 ns.

Growing community of inventors

Le Coudray Montceaux, France

Pascal Fabrice Bilhe