Hybridized porous structure of Al alloy by surface modification of pores

Title
Hybridized porous structure of Al alloy by surface modification of pores
Authors
서영익김영문이영중김세훈김대군이규환김영도
Keywords
Porous surfaces; pore structure control; alkali surface modification; hybrid pore structural alloy
Issue Date
2009-11
Publisher
Journal of porous materials
Citation
VOL 16, NO 6, 715-719
Abstract
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 solution.
URI
http://pubs.kist.re.kr/handle/201004/34208
ISSN
1380-2224
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KIST Publication > Article
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