Fabrication Process of Hybrid Porous Structured Aluminum
- Fabrication Process of Hybrid Porous Structured Aluminum
- 서영익; 박창원; 김대군; 이규환; 김영도
- Issue Date
- TMS2009 138th Annual Meeting & Exhibition, Sanfrancisco, USA, 2009. 02. 15~ 02. 19
- Porous materials can be applied to products with various functions such as energy absorption systems, light weight structures, and air/water filtration systems. Especially, the filtration system using the metallic membrane should have good permeability and excellent filtration efficiency. In this study, a hybrid porous structure was created by styrofoam for macropore network and surface modification for nanoporous surface. A mixture of Al powder, styrofoam and PVP solution was formed in an Al tube and then was dried in oven at 60°C for 1 hour. Styrofoam and binder were removed at 450°C for 2 hours and were subsequently heated up to over 600°C. The fabricated macroporous Al body was surface-modified in dilute alkali solution with different concentrations. The optical microscopy and scanning electron microscopy were employed to investigate the microstructure. The characteristics of pores were confirmed through the porosimeter and Brunauer-Emmett-Teller method.
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