Cerium-based conversion coatings for aluminium alloys

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Cerium-based conversion coatings for aluminium alloys

Popis výsledku v původním jazyce

This work deals with growth of cerium-based conversion coatings on aluminium alloy AW 2024-T351. This paper is focused on influence of varying conditions (activation agens, temperature and immersion time) on final properties of obtained coating. The microstructure and chemical composition of the protective films have been examined by scanning electron microscopy (SEM). The level of corrosion protection was evaluated by the polarization resistance measurement in neutral 3.5 wt.% sodium chloride solution.The coating obtained by simply immersion in solution of Ce3+ salt covers surface of alloy with thin protective layer. The coating obtained from solution containing addition of hydrogen peroxide was thicker and it was formed by small (submicomteric) spherical particles. With increasing immersion time protective effect of obtained layer was increased. In oposite of published papers, coating obtained in bath containing hydrogen peroxide provided worse protection against corrosion.

Název v anglickém jazyce

Cerium-based conversion coatings for aluminium alloys

Popis výsledku anglicky

This work deals with growth of cerium-based conversion coatings on aluminium alloy AW 2024-T351. This paper is focused on influence of varying conditions (activation agens, temperature and immersion time) on final properties of obtained coating. The microstructure and chemical composition of the protective films have been examined by scanning electron microscopy (SEM). The level of corrosion protection was evaluated by the polarization resistance measurement in neutral 3.5 wt.% sodium chloride solution.The coating obtained by simply immersion in solution of Ce3+ salt covers surface of alloy with thin protective layer. The coating obtained from solution containing addition of hydrogen peroxide was thicker and it was formed by small (submicomteric) spherical particles. With increasing immersion time protective effect of obtained layer was increased. In oposite of published papers, coating obtained in bath containing hydrogen peroxide provided worse protection against corrosion.

Druh

D - Stať ve sborníku

CEP obor

JK - Koroze a povrchové úpravy materiálu

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Studentská konference Chemie je život 2012

ISBN

978-80-214-4644-1

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

334-339

Název nakladatele

Vysoké učení technické v Brně, Fakulta chemická

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

7. 12. 2012

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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