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

被引:31
作者
Choi, Dukhyun [1 ]
Lee, Sangmin [1 ]
Kim, Seonghan [1 ]
Lee, Pyungsoo [2 ]
Lee, Kunhong [2 ]
Park, Hyunchul [1 ]
Hwang, Woonbong [1 ]
机构
[1] Pohang Univ Sci & Technol, Dept Mech Engn, Pohang 790784, Gyungbuk, South Korea
[2] Pohang Univ Sci & Technol, Dept Chem Engn, Pohang 790784, Gyungbuk, South Korea
关键词
porous material; adhesion; friction; atomic force microscopy;
D O I
10.1016/j.scriptamat.2008.01.001
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
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.
引用
收藏
页码:870 / 873
页数:4
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