POROUS ALUMINUM MACROSCOPIC BODY AND FABRICATION SYSTEM AND METHOD THEREFOR

Disclosed are a porous aluminum macroscopic body, a fabrication system, and a method therefor, where the porous aluminum macroscopic body is a three-dimensional full-through-hole structure formed by connecting hollow aluminum wires, and the wall thickness of the hollow aluminum wires is 7-100 micrometers. The porous aluminum macroscopic body has an overall porosity of 85-99%, a tensile strength of 0.4-2MPa, and a compressive strength of 1-3.5MPa. The fabrication system comprises a magnetron sputtering subsystem, a high-temperature aluminum vapor subsystem, a low-temperature aluminum deposition subsystem, an aluminum vapor recovery subsystem, and a porous polymer film conveying subsystem. A preparation method therefor comprises first utilizing a magnetron sputtering method to rapidly sputter on a porous polymer film to form an aluminum layer that has a thickness of 1-500nm, then placing the same in a low pressure physical vapor deposition device, and then continuing to deposit the aluminum layer to a thickness of 7-100 micrometers while decomposing the polymer film in-situ so as to obtain the porous aluminum macroscopic body. The foregoing product has the advantages of flexible porosity adjustment and high strength. The preparation method has advantages such as a short preparation time, low requirements for porous polymer film, no need for pre-treatment, continuous operation, low costs and the like.