The invention discloses a high-performance SiC
ceramic-based
composite material aero-engine blade manufacturing method. According to the invention, an aero-engine blade mold is prepared with a 3D printing technology; with a gel injection molding method, a SiC
ceramic blank part with added carbon
fiber is prepared; through processes such as freeze-
drying and
degreasing, a
porous SiC ceramic preform is obtained; the preform is subjected to
organic matter precursor impregnation
cracking several times, and the pores of the preform are filled with a
cracking product, such that preliminary compactness is achieved; and for ensuring the strength and compactness of the part, with a thermal isostatic pressing method, the high-performance SiC ceramic-based
composite material aero-engine blade is manufactured. According to the method, various near-net-shape forming methods are combined, such that defects of difficult
processing of the SiC material are overcome. Compared with traditional
alloy blades, the SiC ceramic-based
composite material aero-engine blade has the advantages of light
mass and high-
temperature resistance. The blade is a development trend of future aero-engine blades.