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The Effect of Mechanical Pretreatment on the Electrochemical Characteristics of PEO Coatings Prepared on Magnesium Alloy AZ80
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SYSNO ASEP 0575522 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The Effect of Mechanical Pretreatment on the Electrochemical Characteristics of PEO Coatings Prepared on Magnesium Alloy AZ80 Author(s) Sovik, J. (SK)
Kajánek, D. (SK)
Pastorek, F. (SK)
Štrbák, M. (SK)
Florková, Z. (SK)
Jambor, Michal (UFM-A) ORCID, RID
Hadzima, B. (SK)Number of authors 7 Article number 5650 Source Title Materials. - : MDPI
Roč. 16, č. 16 (2023)Number of pages 21 s. Language eng - English Country CH - Switzerland Keywords corrosion ; magnesium alloys ; plasma electrolytic oxidation ; electrochemical impedance spectroscopy Subject RIV JL - Materials Fatigue, Friction Mechanics OECD category Materials engineering Method of publishing Open access Institutional support UFM-A - RVO:68081723 UT WOS 001056929700001 EID SCOPUS 85168781322 DOI 10.3390/ma16165650 Annotation The main objective of this article is to provide new information on the effects of mechanical pretreatment of AZ80 magnesium alloy ground with SiC emery papers of different grain sizes on the plasma electrolytic oxidation (PEO) process and corrosion properties of AZ80 in 0.1 M NaCl solution. Then, the roughness of the coated samples was measured by confocal microscopy. The corrosion properties of the ground and coated surfaces were determined by potentiodynamic polarization (PDP) within 1 h of exposure, and electrochemical impedance spectroscopy (EIS) was performed during 168 h of exposure at laboratory temperature. Consequently, the obtained results of the PDP measurements were evaluated by the Tafel analysis and the EIS evaluation was performed by the equivalent circuit analysis through Nyquist diagrams. The morphology and structure of PEO coatings were observed by scanning electron microscopy (SEM) through the secondary imaging technology, and the presence of certain elements in PEO coatings was analyzed by EDS analysis. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2024 Electronic address https://www.mdpi.com/1996-1944/16/16/5650
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