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http://dx.doi.org/10.5695/JSSE.2022.55.5.292

PEO Film Formation Behavior of AZ31 Mg Alloy under Pulse Current  

Moon, Sungmo (Surface Technology Division, Korea Institute of Materials Science)
Publication Information
Journal of the Korean institute of surface engineering / v.55, no.5, 2022 , pp. 292-298 More about this Journal
Abstract
In this study, PEO (plasma electrolytic oxidation) film formation behavior of AZ31 Mg alloy under application of 300 Hz pulse current was studied by the analyses of V-t curve, arc generation behavior, PEO film thickness and morphology of PEO films with treatment time in 0.05 M NaOH + 0.05 M Na2SiO3 + 0.1 M NaF solution. PEO films was observed to grow after 10 s of application of pulse current together with generation of micro-arcs. PEO film grew linearly with treatment time at a growth rate of about 5.58 ㎛/min at 200 mA/cm2 of pulse current but increasing rate of film formation voltage became lowered largely with increasing treatment time after passing about 250 V, suggesting that resistivity of PEO films during micro-arc generation decreases with increasing film formation voltage at more than 250 V.
Keywords
Plasma electrolytic oxidation; AZ31 Mg alloy; Anodic oxide film; Pulse current;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
연도 인용수 순위
1 B. R. Fazal, S. Moon, Formation of cerium conversion coatings on AZ31 magnesium alloy, J. Kor. Inst. Surf. Eng., 49 (2016) 1-13.   DOI
2 S. Moon, Y. Kim, C. Yang, Effect of NaOH concentration on the PEO film formation of AZ31 magnesium alloy in the electrolyte containing carbonate and silicate Ions, J. Surf. Sci. Eng., 50 (2017) 308-314.
3 S. L. Aktug, S. Durdu, I. Kutbay, M. Usta, Effect of Na2SiO3·5H2O concentration on microstructure and mechanical properties of plasma electrolytic oxide coatings on AZ31 Mg alloy produced by twin roll casting, Ceram. Int., 42 (2016) 1246.   DOI
4 H. Duan, C. Yan, F. Wang, Effect of electrolyte additives on performance of plasma electrolytic oxidation films formed on magnesium alloy AZ91D, Electrochim., 52 (2007) 3785-3793.   DOI
5 S. Stojadinovic, R. Vasilic, Jelena R. P., M. Peric, Characterization of plasma electrolytic oxidation of magnesium alloy AZ31 in alkaline solution containing fluoride, Surf. Coat. Technol., 273 (2015) 1-11.   DOI
6 S. Moon, Y. Kim, Anodic oxidation behavior of AZ31 magnesium alloy in aqueous electrolyte containing various Na2CO3 concentrations, J. Kor. Inst. Surf. Eng., 49 (2016) 331-338.   DOI
7 J. Liang, P. B. Srinivasan, C. Blawert, M, Stormer, W. Dietzel, Electrochemical corrosion behaviour of plasma electrolytic oxidation coatings on AM50 magnesium alloy formed in silicate and phosphate based electrolytes, Electrochim. Acta, 54 (2009) 3842-3850.   DOI
8 R. Arrabal, E. Matykina, F. Viejo, P. Skeldon, G. E. Thompson, Corrosion resistance of WE43 and AZ91D magnesium alloys with phosphate PEO coatings, Corros. Sci., 50 (2008) 1744-1752.   DOI
9 S. Moon, A blade-abrading method for surface pretreatment of Mg alloys, J. Kor. Inst. Surf. Eng. 48 (2015) 194-198.   DOI
10 J. Liang, B. Guo, J. Tian, H. Liu, J. Zhou,T. Xu, Effect of potassium fluoride in electrolytic solution on the structure and properties of microarc oxidation coatings on magnesium alloy, Appl. Surf. Sci., 252 (2005) 345-351.   DOI
11 N. V. Phuong, M. Gupta, S. Moon, Corrosion performance of magnesium phosphate conversion coating on AZ31 magnesium, Trans. Nonferrous Met. Soc. China, 27 (2017) 1087-1095.   DOI
12 S. Moon, D. Kwon, Anodic oxidation behavior of AZ31 Mg alloy in aqueous solutions containing various NaF concentrations, J. Kor. Inst. Surf. Eng., 55 (2022) 196-201.
13 B. R. Fazal, S. Moon, Effect of fluoride conversion coating on the corrosion resistance and adhesion of E-painted AZ31 magnesium alloy, J. Kor. Inst. Surf. Eng., 49 (2016) 395-400.   DOI
14 D. Kwon, P. K. Song, S. Moon, Formation behavior and properties of PEO Films on AZ91 Mg alloy in 0.1 M NaOH + 0.05 M NaF solution containing various Na2SiO3, J. Kor. Inst. Surf. Eng., 53 (2020) 59-66.
15 S. Moon, C. Yang, S. Na, Effects of hydroxide and silicate ions on the plasma electrolytic oxidation of AZ31 Mg Alloy, J. Kor. Inst. Surf. Eng., 47 (2014) 147-154.   DOI
16 S. Moon, D. Kwon, Anodic oxide films formed on AZ3 magnesium alloy by plasma electrolytic oxidation method in electrolytes containing various NaF concentrations, J. Kor. Inst. Surf. Eng., 49 (2016) 225-230.   DOI
17 B. Kazanski, A. Kossenko, M. Zinigrad, A. Lugovskoy, Fluoride ions as modifiers of the oxide layer produced by plasma electrolytic oxidation on AZ91D magnesium alloy, Appl. Surf. Sci., 287 (2013) 461-466.   DOI
18 S. Moon, J. Kim, Effect of Na3PO4 concentration on the formation behavior of PEO films on AZ31 Mg alloy, J. Kor. Inst. Surf. Eng., 52 (2019) 265-274.
19 S. Yagi, A. Sengoku, K. Kubota, E. Matsubara, Surface modification of ACM522 magnesium alloy by plasma electrolytic oxidation in phosphate electrolyte, Corros. Sci., 57 (2012) 74-80.   DOI