US 11,933,181 B2
Abradable coating for rotating blades of a turbomachine
Philippe Charles Alain Le Biez, Moissy-Cramayel (FR); Nicolas Droz, Moissy-Cramayel (FR); Lisa Pin, Moissy-Cramayel (FR); and Serge Georges Vladimir Selezneff, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Filed by SAFRAN AIRCRAFT ENGINES, Paris (FR)
Filed on May 17, 2022, as Appl. No. 17/746,417.
Application 17/746,417 is a division of application No. 17/269,854, granted, now 11,359,508, previously published as PCT/FR2019/051943, filed on Aug. 20, 2019.
Claims priority of application No. 1857581 (FR), filed on Aug. 22, 2018.
Prior Publication US 2022/0282634 A1, Sep. 8, 2022
Int. Cl. F01D 11/12 (2006.01); C23C 4/073 (2016.01); C23C 4/11 (2016.01)
CPC F01D 11/122 (2013.01) [C23C 4/073 (2016.01); C23C 4/11 (2016.01); F05D 2300/611 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An abradable coating for a turbomachine part, comprising a matrix made of a first metal material and particles made of a second metal material that are dispersed in said matrix, the first metal material having a melting temperature greater than 900° C., the second metal material having a melting temperature at least 50° C. lower than the melting temperature of the first metal material, wherein the second metal material is copper or a copper alloy, or silver, or a silver alloy, wherein said abradable coating comprises between 30% and 70% by volume of the particles made of the second metal material, wherein the matrix made of the first metal material comprises a remainder of the volume of said abradable coating.