Effect of Plasma Electrolytic Oxidation Process on Corrosion Resistance of Al-Coated AZ61 Magnesium Alloy
Küçük Resim Yok
Tarih
2025
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Sakarya University
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Magnesium alloys are extensively utilized in aerospace, aviation, and automotive sectors due to their low density and high specific strength, which offer significant advantages for lightweight structural applications. Their low density especially directs the attention of the aviation sector, where lightness is necessary, to these alloys. However, one of the disadvantages that restricts their use in the industry is their low corrosion resistance. In this study, the Plasma Electrolytic Oxidation (PEO) process was applied in a silicate-based electrolyte to AZ61 magnesium alloy pre-coated with aluminum using the electric arc spraying technique. To examine the characteristics of the fabricated coatings, their phase structures, surface features, and elemental compositions were investigated through XRD, SEM, and EDS analyses. Corrosion performances of coatings were investigated by potentiodynamic polarization test in 3.5% NaCl solution. As a result of electrochemical tests, corrosion current density values for the base sample (AZ61) and PEO coating (AZ61-PEO) were determined as 36,29 ?A. cm?2 and 6,53 ?A. cm?2, respectively. The findings highlight that the Al?O? layer formed following PEO treatment significantly enhanced the corrosion resistance compared to the base sample. © 2025, Sakarya University. All rights reserved.
Açıklama
Anahtar Kelimeler
AZ61, Corrosion, Magnesium, Plasma electrolytic oxidation
Kaynak
Sakarya University Journal of Science
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
29
Sayı
6
