The invention discloses an aluminum-based
coating and a preparation method thereof, and an aluminum
alloy composite material prepared from the aluminum-based
coating and a preparation method of the aluminum
alloy composite material. The aluminum-based
coating is prepared from Ni-SiC
powder, aluminum
alloy powder, Al-Si-Cu
powder and an organic
silicon resin adhesion agent. The preparation method of the aluminum-based coating includes the steps that after
raw material powder are mixed, the organic
silicon resin adhesion agent is added for repeat-rolling, and the aluminum-based coating is obtained. The aluminum
alloy composite material prepared from the aluminum-based coating comprises an aluminum
alloy substrate and the aluminum-based coating covering the surface of the substrate. The preparation method of the aluminum
alloy composite material includes the steps that the aluminum-based coating is tightly attached to the surface of a pretreated aluminum alloy to be subjected to a brazingreaction. The aluminum-based coating is made of a flexible fibrous
metal material, and
metal fibers in the coating form a crisscrossed three-dimensional spider-web type structure; the aluminum-basedcoating and a substrate material are subjected to
brazing compound, the forming effect is excellent, the
bonding strength is high, and
wear resistance and the
hardness of the surface of the substratematerial can be effectively improved; and in addition, the preparation method is simple and convenient, and safe and environmental friendly.