EFFECT OF SURFACE PRETREATMENT ON THE FORMATION AND PROTECTIVENESS OF PEO LAYERS ON PURE MAGNESIUM AND WE43 ALLOY

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10511844" target="_blank" >RIV/00216208:11320/25:10511844 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.37904/metal.2025.5099" target="_blank" >https://doi.org/10.37904/metal.2025.5099</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/metal.2025.5099" target="_blank" >10.37904/metal.2025.5099</a>

Jazyk výsledku

angličtina

Název v původním jazyce

EFFECT OF SURFACE PRETREATMENT ON THE FORMATION AND PROTECTIVENESS OF PEO LAYERS ON PURE MAGNESIUM AND WE43 ALLOY

Popis výsledku v původním jazyce

Plasma electrolytic oxidation (PEO) has emerged as a promising surface modification technique to enhance corrosion resistance of magnesium alloys. This study investigates the influence of different surface pretreatments: polishing, grinding, and shot-peening, on the formation and performance of PEO coatings on pure magnesium and WE43 (Mg-4Y-3RE) alloy. SEM analysis was used to characterise the coating morphology, while electrochemical impedance spectroscopy was employed to monitor corrosion behaviour over 168-hour period. The results reveal that PEO significantly improves corrosion resistance in both materials, with polished samples exhibiting the highest initial polarisation resistance. Interestingly, shot-peening had a detrimental effect on corrosion resistance in pure magnesium after longer immersion period but resulted in improved performance for WE43, attributed to the beneficial interaction between deformation-induced lattice defects and rare earth elements. These findings highlight the complex relationship between alloy composition, surface preparation, and corrosion behaviour.

Název v anglickém jazyce

EFFECT OF SURFACE PRETREATMENT ON THE FORMATION AND PROTECTIVENESS OF PEO LAYERS ON PURE MAGNESIUM AND WE43 ALLOY

Popis výsledku anglicky

Plasma electrolytic oxidation (PEO) has emerged as a promising surface modification technique to enhance corrosion resistance of magnesium alloys. This study investigates the influence of different surface pretreatments: polishing, grinding, and shot-peening, on the formation and performance of PEO coatings on pure magnesium and WE43 (Mg-4Y-3RE) alloy. SEM analysis was used to characterise the coating morphology, while electrochemical impedance spectroscopy was employed to monitor corrosion behaviour over 168-hour period. The results reveal that PEO significantly improves corrosion resistance in both materials, with polished samples exhibiting the highest initial polarisation resistance. Interestingly, shot-peening had a detrimental effect on corrosion resistance in pure magnesium after longer immersion period but resulted in improved performance for WE43, attributed to the beneficial interaction between deformation-induced lattice defects and rare earth elements. These findings highlight the complex relationship between alloy composition, surface preparation, and corrosion behaviour.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GA24-10626S" target="_blank" >GA24-10626S: Moderní povrchové úpravy biologicky odbouratelných hořčíkových slitin pro přizpůsobitelnou rychlost degradace</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název statě ve sborníku

2025 : 34th International Conference on Metallurgy and Materials : conference proceedings

ISBN

978-80-88365-27-3

ISSN

2694-9296

e-ISSN

2694-9296

Počet stran výsledku

7

Strana od-do

403-409

Název nakladatele

Tanger Ltd.

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

21. 5. 2025

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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