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Dependence of adhesion and friction on porosity in porous anodic alumina films

Title
Dependence of adhesion and friction on porosity in porous anodic alumina films
Authors
Choi, DLee, SKim, SLee, PLee, KPark, HHwang, W
POSTECH Authors
Lee, KPark, HHwang, W
Date Issued
May-2008
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Abstract
We explore, using atomic force microscopy, adhesion and friction characteristics of porous anodic alumina (PAA) films as the porosity varies. Pore formation greatly reduces the adhesive force, by as much as 30 times, but the porosity of PAA films has little influence on its adhesion properties, showing good agreement with the relative contact area estimated by the Hertzian model and indentation theory. Frictional coefficients vary nonlinearly with the porosity of the PAA films due to intrinsic characteristics of the surface morphology of PAA films. (c) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Keywords
porous material; adhesion; friction; atomic force microscopy; ATOMIC-FORCE MICROSCOPY; MAGNETIC-PROPERTIES; NANOWIRE ARRAYS; FABRICATION; SUBSTRATE; MEMBRANES
URI
http://oasis.postech.ac.kr/handle/2014.oak/28225
DOI
10.1016/J.SCRIPTAMAT
ISSN
1359-6462
Article Type
Article
Citation
SCRIPTA MATERIALIA, vol. 58, no. 10, page. 870 - 873, 2008-05
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 LEE, KUN HONG
Dept. of Chemical Enginrg
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