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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.8b01100
|2 doi
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|a pubmed24n0944.xml
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|a (DE-627)NLM283425164
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|a (NLM)29694782
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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 Ou, J F
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Influence of Hydrostatic Pressure on the Corrosion Behavior of Superhydrophobic Surfaces on Bare and Oxidized Aluminum Substrates
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|c 2018
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| 336 |
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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 10.09.2018
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|a Date Revised 10.09.2018
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a It is generally recognized that superhydrophobic surfaces in water may be used for corrosion resistance due to the entrapped air in the solid/liquid interface and could find potential applications in the protection of ship hull. For a superhydrophobic surface, as its immersion depth into water increases, the resultant hydrostatic pressure is also increased, and the entrapped air can be squeezed out much more easily. It is therefore predicted that high hydrostatic pressure would cause an unexpected decrease in corrosion resistance for the vessels in deep water (e.g., submarines) because of the unstable entrapped air. In this work, in order to clarify the role of hydrostatic pressure in the corrosion behavior of superhydrophobic surfaces, two typical superhydrophobic surfaces (SHSs) were prepared on bare and oxidized aluminum substrates, respectively, and then were immersed into the NaCl aqueous solutions with different depths of ∼0 cm (hydrostatic pressure ∼0 kPa), 10 cm (1 kPa), and 150 cm (15 kPa). It was found out for the SHSs on the oxidized Al, as the hydrostatic pressure increased, the corrosion behavior became severe. However, for the SHSs on the bare Al, their corrosion behavior was complex due to hydrostatic pressure. It was found that the corrosion resistance under 1 kPa was the highest. Further mechanism analysis revealed that this alleviated corrosion behavior under 1 kPa resulted from suppressing the oxygen diffusion through the liquid and reducing the subsequent corrosion rate as compared with 0 kPa, whereas the relatively low hydrostatic pressure (HP) could stabilize the entrapped air and hence enhance the corrosion resistance, compared with 15 kPa. The present study therefore provided a fundamental understanding for the applications of SHSs to prevent the corrosion, especially for various vessels in deep water
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Fang, X Z
|e verfasserin
|4 aut
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|a Zhao, W J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lei, S
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xue, M S
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, F J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, C Q
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lu, Y L
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, W
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 34(2018), 20 vom: 22. Mai, Seite 5807-5812
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:34
|g year:2018
|g number:20
|g day:22
|g month:05
|g pages:5807-5812
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|u http://dx.doi.org/10.1021/acs.langmuir.8b01100
|3 Volltext
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