Method for preparing aluminum-containing alloy powder, use thereof and alloy strip

Disclosed are a method for preparing an aluminum-containing alloy powder, the use thereof and an alloy strip. The preparation method involves: by utilizing the characteristic of an initial alloy solidification structure including a matrix phase and a dispersed particle phase, removing the matrix phase by means of a reaction involving an acid solution, so as to separate out the dispersed particle phase and obtain the aluminum-containing alloy powder. The preparation method process is simple, can prepare nanometer-, submicron-, micron- and millimeter-scale aluminum-containing alloy powders with different morphologies, and can be used in the fields of optoelectronic devices, wave-absorbing materials, catalysts, 3D metal printing, metal injection molding, anticorrosive coatings, etc.