Corrosion and adhesion properties of MAO-coated LA91 magnesium alloy

Sukuroglu S., Sukuroglu E. E., Totik Y., Gülten G., Efeoğlu İ., Avci S.

Materials Science and Technology (United Kingdom), vol.40, no.8, pp.616-632, 2024 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 40 Issue: 8
  • Publication Date: 2024
  • Doi Number: 10.1177/02670836231219868
  • Journal Name: Materials Science and Technology (United Kingdom)
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.616-632
  • Keywords: adhesion properties, corrosion properties, LA91 magnesium alloy, micro-arc oxidation (MAO), surface coating, Taguchi optimisation method
  • Ataturk University Affiliated: Yes

Abstract

Magnesium–lithium alloy is used in different areas of industry and is known as a super light metallic engineering material. However, the use of these alloys is limited due to their surface properties under extreme loads and aggressive environments. Surface treatments can be applied to these alloys to increase their usage areas and improve their weak surface properties. In this study, the micro-arc oxidation method was applied to improve the surface properties of LA91 alloy. The corrosion and adhesion behaviour of the coated samples were investigated. The lowest corrosion current density in the coatings was obtained under Experiment 3. Experiment 3 has the highest Lc2 value due to the coating thickness and the denser and smaller diameter pores of the functional intermediate layer.