METHOD OF FABRICATING COMPOSITE PARTS BY LOW MELTING POINT IMPREGNATION Russian patent published in 2018 - IPC C04B35/573 C04B35/577 C04B35/80 

FIELD: technological processes.

SUBSTANCE: invention relates to a method of fabricating a composite part, comprising the steps of: producing a consolidated fibrous preform, wherein the fibres of the preform being carbon fibres or ceramic fibres and being coated with an interphase, obtaining a consolidated and partially densified fibrous preform, wherein the partial densification comprises the formation of the first matrix phase on the interphase obtained by chemical vapour infiltration, and continuation of the densification by infiltration with an infiltration composition containing at least silicon and at least one other element capable of lowering the melting point of the infiltration composition to a temperature less than or equal to 1,150 °C. Infiltration composition, in addition to silicon, comprises 50–75 mass.% nickel or 89–98 mass.% germanium.

EFFECT: expulsion of the destruction of the billet fibers in the process of manufacturing a part.

11 cl, 1 dwg