Hybridized porous structure of Al alloy by surface modification of pores
- Hybridized porous structure of Al alloy by surface modification of pores
- 서영익; 김영문; 이영중; 김세훈; 김대군; 이규환; 김영도
- Porous surfaces; pore structure control; alkali surface modification; hybrid pore structural alloy
- Issue Date
- Journal of porous materials
- VOL 16, NO 6, 715-719
- To improve the filtration efficiency of porous
materials used in filters, an extensive specific surface area
is required to serve as a site for adsorption with impurities.
In this paper, a method for creating a hybridized porous
alloy using a powder metallurgical technique to build primary
pores in an Al-4 wt% Cu alloy and subsequent
surface modification for a secondary pore surface with a
considerably increased specific surface area is suggested.
The specific surface area increased from 0.7 m2/g for the
non-treated specimen to 7.3 m2/g for the 0.005 M NaOHtreated
specimen. The surface-modified specimens showed
a remarkable increase in micropores[10 nm. The primary
pore structure was controlled by granulation, compacting
pressure, and sintering; the secondary pore structure was
obtained by a surface modification using a dilute NaOH
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