▎ 摘　　要

NOVELTY - Method for improving high-temperature oxidation resistance of silver-copper alloy by using a three-dimensional (3D) network enhanced phase involves (a) using ice template method to prepare a graphene sponge with a density of 7-15 mg/cm3, (b) uniformly mixing silver-cobalt-tungsten powder with an adhesive to obtain an aluminum-copper setite welding paste, (c) forming the aluminum-colony-tin tungsten welding paste by a mold to obtain a sheet-shaped solid silver-copper-titanium welding paste and (d) assembling an infiltration test piece by placing the graphene sponge between two solid aluminum-corner welding paste to obtain the penetration test piece, (e) placing the to-be-melted test piece in the mold, (f) under the vacuum condition for infiltration, cooling to room temperature along with the furnace, discharging, and (g) grinding the surface of the 3D network titanium carbide. USE - The method for improving high temperature oxidation resistance of silver-copper alloy by using three-dimensional network enhanced phase is useful in aviation field, aerospace field, energy field, high temperature section high pressure compressor wheel disc, blade, blade disc and engine components of service temperature. ADVANTAGE - The method enables improving high temperature oxidation resistance of silver-copper-based brazing filler metal by using three-dimensional network enhanced phase.