PRE-SINTERED WORKPIECE WITH HIGH HEAT RESISTANCE, USED, IN PARTICULAR, AS ABRASIVE COATING FOR GAS TURBINE BLADES Russian patent published in 2024 - IPC F01D5/20 B22F5/04 F01D5/28 

FIELD: turbines or turbomachines.

SUBSTANCE: invention relates to workpiece (11) of an abrasive element of a blade tip of a gas turbine for connection to a blade tip to form an abrasive element of the blade tip, wherein workpiece (11) of abrasive element of gas turbine blade tip is formed from binding layer (12) and abrasive layer (13), wherein binding layer (12) is a metal layer containing particles of powder of a nickel solder alloy and a nickel-based superalloy, and abrasive layer (13) is a ceramic layer in a metal matrix containing particles of cubic boron nitride (cBN) powder and aluminum oxide (Al₂O₃) in a metal matrix with the same composition as binding layer (12). Invention also relates to a method of manufacturing workpiece (11) of an abrasive element of a tip of a gas turbine and method of attachment of workpiece (11) of abrasive element of blade tip of gas turbine to blade tip to form abrasive element of blade tip.

EFFECT: reduced gas leakage and higher efficiency of gas turbine engine due to use of improved materials and coatings with high heat resistance.

11 cl, 7 dwg, 3 tbl