Changes in the specific surface area of porous aluminium oxide films during sealing

Bartolomé, Ma. J.; López, V.; Escudero, E.; Caruana, G.; González, José Antonio Varela

doi:10.1016/j.surfcoat.2005.03.019

Cited by 32 publications

(27 citation statements)

References 11 publications

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“…These changes in Bode phase plots are accompanied by relative increase of impedance modulus at medium and higher frequencies. Such behavior was previously observed in hydrothermal sealing process of anodized layers [40][41][42]. The Bode plots of conventional PP, depicted in Fig.…”

Section: Eissupporting

confidence: 78%

Application of electrochemical impedance spectroscopy in characterization of structural changes of printing plates

Poljaček

Risović

Cigula

et al. 2011

J Solid State Electrochem

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The porous structure of the aluminium oxide surface of lithographic printing plate (PP) has a most significant influence on the quality of the imprints. This study presents the results of application of electrochemical impedance spectroscopy (EIS) in characterization of PPs' porous structures and their changes during chemical processing. Two common PP types-thermal and conventional-were investigated. The influence of the processing solution's working age on topographical changes of PP surface and associated change in the impedance spectra are investigated and discussed. The equivalent electrical circuit models reproducing the observed EIS spectra are proposed. Based on these models two mechanisms of surface's topography changes responsible for degradation of PP performance due to the processing are identified and discussed.

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Section: Eissupporting

confidence: 78%

Application of electrochemical impedance spectroscopy in characterization of structural changes of printing plates

Poljaček

Risović

Cigula

et al. 2011

J Solid State Electrochem

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“…Although TEM and SEM have been used extensively during the course of the present project, in this communication only occasional microstructural details obtained by SEM will be noted, using the same methodology described in detail elsewhere [20,32].…”

Section: Other Testsmentioning

confidence: 99%

Behaviour of different bare and anodised aluminium alloys in the atmosphere

Bartolomé

Río²,

Escudero

et al. 2008

Surface and Coatings Technology

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Exposure tests in natural atmospheres are an indispensable means for determining the behaviour and durability of metallic materials in the atmosphere. The corrosion behaviour of bare aluminium and anodised aluminium with three different coating thicknesses has been evaluated for two years' exposure in two natural atmospheres of very different corrosivities: one urban and the other marine. Several techniques have been used to evaluate changes in the specimens during exposure, but special attention is paid to the direct measurement of corrosion by gravimetry and its indirect estimation by the comparatively much more sensitive electrochemical impedance spectroscopy (EIS) technique. The results show that if no demands are placed on the conservation of its appearance, aluminium may be used without protection even in atmospheres of medium or high corrosivity. The anodising and sealing of aluminium alloys, above an ill-defined minimum thickness threshold, is an appropriate solution to prevent localised corrosion of aluminium and to conserve its appearance, even in aggressive atmospheres.

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“…Researchers have mainly focused on the replacement of chromic acid anodizing by sulfuric acid anodizing (SAA) without [8][9][10] or with [5,[11][12][13][14][15] the addition of A c c e p t e d M a n u s c r i p t 3 modifiers. One of such modifier is tartaric acid [5, 12-14, 16, 17], which, like other organic acids [18][19][20][21], seems to be able to produce anodic aluminum films with self-ordered porosity [17,22].…”

mentioning

confidence: 99%

Corrosion protection of clad 2024 aluminum alloy anodized in tartaric-sulfuric acid bath and protected with hybrid sol–gel coating

Capelossi

Poelman

Recloux

et al. 2014

Electrochimica Acta

148

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Changes in the specific surface area of porous aluminium oxide films during sealing

Cited by 32 publications

References 11 publications

Application of electrochemical impedance spectroscopy in characterization of structural changes of printing plates

Application of electrochemical impedance spectroscopy in characterization of structural changes of printing plates

Behaviour of different bare and anodised aluminium alloys in the atmosphere

Corrosion protection of clad 2024 aluminum alloy anodized in tartaric-sulfuric acid bath and protected with hybrid sol–gel coating

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