Surface Charge at the Oxide/Electrolyte Interface : Toward Optimization of Electrolyte Composition for Treatment of Aluminum and Magnesium by Plasma Electrolytic Oxidation

Controlling microdischarges in plasma electrolytic oxidation is of great importance in order to optimize coating quality. The present study highlights the relationship between the polarity at which breakdown occurs and the electrolyte pH as compared with the isoelectric point (IEP). It is found that...

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Publié dans:Langmuir : the ACS journal of surfaces and colloids. - 1985. - 32(2016), 5 vom: 09. Feb., Seite 1405-9
Auteur principal: Nominé, Alexandre (Auteur)
Autres auteurs: Martin, Julien, Noël, Cédric, Henrion, Gérard, Belmonte, Thierry, Bardin, Ilya V, Lukeš, Petr
Format: Article en ligne
Langue:English
Publié: 2016
Accès à la collection:Langmuir : the ACS journal of surfaces and colloids
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520 |a Controlling microdischarges in plasma electrolytic oxidation is of great importance in order to optimize coating quality. The present study highlights the relationship between the polarity at which breakdown occurs and the electrolyte pH as compared with the isoelectric point (IEP). It is found that working at a pH higher than the IEP of the grown oxide prevents the buildup of detrimental cathodic discharges. The addition of phosphates results in a shift in the IEP to a lower value and therefore promotes anodic discharges at the expense of cathodic ones 
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700 1 |a Noël, Cédric  |e verfasserin  |4 aut 
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700 1 |a Belmonte, Thierry  |e verfasserin  |4 aut 
700 1 |a Bardin, Ilya V  |e verfasserin  |4 aut 
700 1 |a Lukeš, Petr  |e verfasserin  |4 aut 
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