The Effect of Mechanical Pretreatment on the Electrochemical Characteristics of PEO Coatings Prepared on Magnesium Alloy AZ80
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, t...
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MDPI AG
2023-08-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/16/5650 |
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| author | Ján Sovík Daniel Kajánek Filip Pastorek Milan Štrbák Zuzana Florková Michal Jambor Branislav Hadzima |
| author_facet | Ján Sovík Daniel Kajánek Filip Pastorek Milan Štrbák Zuzana Florková Michal Jambor Branislav Hadzima |
| author_sort | Ján Sovík |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T23:46:34Z |
| format | Article |
| id | doaj.art-72ddd8914a9449e4aef50d3e40ba831c |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T23:46:34Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-72ddd8914a9449e4aef50d3e40ba831c2023-11-19T02:00:41ZengMDPI AGMaterials1996-19442023-08-011616565010.3390/ma16165650The Effect of Mechanical Pretreatment on the Electrochemical Characteristics of PEO Coatings Prepared on Magnesium Alloy AZ80Ján Sovík0Daniel Kajánek1Filip Pastorek2Milan Štrbák3Zuzana Florková4Michal Jambor5Branislav Hadzima6Department of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaResearch Centre, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaResearch Centre, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaDepartment of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaResearch Centre, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaInstitute of Physics of Materials, Czech Academy of Sciences, Žižkova 513/22, 61600 Brno, Czech RepublicResearch Centre, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaThe 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.https://www.mdpi.com/1996-1944/16/16/5650corrosionmagnesium alloysplasma electrolytic oxidationelectrochemical impedance spectroscopy |
| spellingShingle | Ján Sovík Daniel Kajánek Filip Pastorek Milan Štrbák Zuzana Florková Michal Jambor Branislav Hadzima The Effect of Mechanical Pretreatment on the Electrochemical Characteristics of PEO Coatings Prepared on Magnesium Alloy AZ80 Materials corrosion magnesium alloys plasma electrolytic oxidation electrochemical impedance spectroscopy |
| title | The Effect of Mechanical Pretreatment on the Electrochemical Characteristics of PEO Coatings Prepared on Magnesium Alloy AZ80 |
| title_full | The Effect of Mechanical Pretreatment on the Electrochemical Characteristics of PEO Coatings Prepared on Magnesium Alloy AZ80 |
| title_fullStr | The Effect of Mechanical Pretreatment on the Electrochemical Characteristics of PEO Coatings Prepared on Magnesium Alloy AZ80 |
| title_full_unstemmed | The Effect of Mechanical Pretreatment on the Electrochemical Characteristics of PEO Coatings Prepared on Magnesium Alloy AZ80 |
| title_short | The Effect of Mechanical Pretreatment on the Electrochemical Characteristics of PEO Coatings Prepared on Magnesium Alloy AZ80 |
| title_sort | effect of mechanical pretreatment on the electrochemical characteristics of peo coatings prepared on magnesium alloy az80 |
| topic | corrosion magnesium alloys plasma electrolytic oxidation electrochemical impedance spectroscopy |
| url | https://www.mdpi.com/1996-1944/16/16/5650 |
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