Abstract:A novel spray deposition technology with the characteristics of multi-layer deposition,the combination of forced external cooling and internal water-cooling of the substrate was developed.Compared with the conventional spray deposition technology,the novel technology exhibits the specific advantages,including larger solidification rate,higher dimensional precision,and ease to manufacture large preforms.The law of multi-layer deposition was studied,and a high-temperature Al-Fe-V-Si alloy with good mechanical properties was prepared using this novel technology.

Key words: multi-layer; spray deposition; Al-Fe-V-Si alloy