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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.5b02392
|2 doi
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|a pubmed24n0843.xml
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|a (NLM)26393523
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Jeong, Chanyoung
|e verfasserin
|4 aut
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| 245 |
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|a Air-Impregnated Nanoporous Anodic Aluminum Oxide Layers for Enhancing the Corrosion Resistance of Aluminum
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|c 2015
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 27.06.2016
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|a Date Revised 13.10.2015
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Nanoporous anodic aluminum oxide layers were fabricated on aluminum substrates with systematically varied pore diameters (20-80 nm) and oxide thicknesses (150-500 nm) by controlling the anodizing voltage and time and subsequent pore-widening process conditions. The porous nanostructures were then coated with a thin (only a couple of nanometers thick) Teflon film to make the surface hydrophobic and trap air in the pores. The corrosion resistance of the aluminum substrate was evaluated by a potentiodynamic polarization measurement in 3.5 wt % NaCl solution (saltwater). Results showed that the hydrophobic nanoporous anodic aluminum oxide layer significantly enhanced the corrosion resistance of the aluminum substrate compared to a hydrophilic oxide layer of the same nanostructures, to bare (nonanodized) aluminum with only a natural oxide layer on top, and to the latter coated with a thin Teflon film. The hydrophobic nanoporous anodic aluminum oxide layer with the largest pore diameter and the thickest oxide layer (i.e., the maximized air fraction) resulted in the best corrosion resistance with a corrosion inhibition efficiency of up to 99% for up to 7 days. The results demonstrate that the air impregnating the hydrophobic nanopores can effectively inhibit the penetration of corrosive media into the pores, leading to a significant improvement in corrosion resistance
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Aluminum
|2 NLM
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|a CPD4NFA903
|2 NLM
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| 650 |
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|a Aluminum Oxide
|2 NLM
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| 650 |
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|a LMI26O6933
|2 NLM
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| 700 |
1 |
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|a Lee, Junghoon
|e verfasserin
|4 aut
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1 |
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|a Sheppard, Keith
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Choi, Chang-Hwan
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 31(2015), 40 vom: 13. Okt., Seite 11040-50
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:31
|g year:2015
|g number:40
|g day:13
|g month:10
|g pages:11040-50
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|u http://dx.doi.org/10.1021/acs.langmuir.5b02392
|3 Volltext
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