Centre National De La Recherche Scientifique

Safran Aircraft Engines

Université Paul Sabatier (toulouse Iii)

Geoffroy Chevallier

Jean-Baptiste Mottin

Claude Estournes

Romain Epherre

Philippe Charles Alain Le Biez

Serge Georges Vladimir Selezneff

Florence Lecouturier

Nelson Ferreira

Yannick Marcel Beynet

Antoine Lonjon

Simon Tardieu

Christophe Laurent

David Mesguich

A method of fabricating an abradable coating of varying density, and such an abradable coating of varying density. According to the invention, the method comprises the following steps: providing a substrate () having a first portion with its surface situated at a first level (A), and a second portion with its surface situated at a second level (B) different from the first level; depositing a precursor material on the first and second portions of the substrate (); compressing the precursor material between the substrate and a bearing surface; and sintering the precursor material as compressed in this way in order to obtain an abradable coating () having a first portion () on the first portion of the substrate, and possessing a first density, and a second portion () on the second portion of the substrate, and possessing a second density distinct from the first.

Abradable coating having variable densities

The invention relates to a method for manufacturing a turbine shroud () for a turbomachine, the method comprising manufacturing at least one turbine shroud sector (), positioning the turbine shroud sector () in a bottom mold so that an outer surface of the turbine shroud sector is in contact at least in part with the bottom mold, and depositing a powder layer on an inner surface () of the turbine shroud sector (). Thereafter, a top mold is positioned on the powder layer and an abradable layer () is made by subjecting the powder layer to a method of SPS sintering, the abradable layer () being for being disposed facing a turbine wheel.

Method for manufacturing a turbine shroud for a turbomachine

Growing community of inventors

Auzeville-Tolosane, France

Geoffroy Chevallier