Full
Outline
Porous metal aluminum， a low-density metallic foam with a porous structure， exhibits good energy absorption and sound absorption properties， leading to its wide application in fields such as machinery manufacturing and aerospace. Currently， the fabrication of porous aluminum primarily relies on physical or electrochemical methods， which often involve complex processes and high costs. This study employs a low-cost material extrusion forming technique to prepare porous metal aluminum， investigates its forming characteristics， and systematically examines the effects of aluminum-based slurry solid content， forming parameters， and sintering processes on the properties of the extruded porous metal aluminum， and the pore structure is optimized to prepare porous metal aluminum. The results show that when the solid content of the aluminum-based slurry is 80%（mass fraction）， the desired billet can be extruded completely without collapse or depression. Using process parameters of a needle diameter of 0.34 mm， a layer height of 0.22 mm， and a filling rate of 50% to prepare the billet. The porous metal aluminum obtained by sintering at 650 ℃ and holding for 150 min has good properties， with a flexural strength of 12.57 MPa， a porosity of 53.96%， and a shrinkage rate of 3.19%， meeting the performance requirements for porous metal aluminum.
68
30
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
