Effect of the electrolytic solution composition on the performance of micro-arc anodic oxidation films formed on AM60B magnesium alloy

A. Da Forno, M. Bestetti

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

Anodic oxidation in the micro-arc regime is one of the most investigated techniques used to coat magnesium alloys with ceramic coatings for protection from corrosion and wear. The composition of the electrolytic solution affects the anodic oxide layer morphology and composition and its behaviour in aggressive environments. In this paper the influence of the composition of the electrolytic solution on the anodic oxidation process of AM60B magnesium alloy and oxide properties is discussed. Scanning electron microscopy and x-ray diffraction were employed to assess morphology, crystallographic structure and composition of the anodic oxide. Electrochemical polarization tests were performed to evaluate the corrosion resistance behaviour of the coated magnesium alloys.

Original languageEnglish
Pages (from-to)1783-1788
Number of pages6
JournalSurface and Coatings Technology
Volume205
Issue number6
DOIs
Publication statusPublished - 15 Dec 2010
Externally publishedYes

Fingerprint

Anodic oxidation
magnesium alloys
Magnesium alloys
arcs
oxidation
Chemical analysis
Oxides
ceramic coatings
Ceramic coatings
magnesium oxides
oxides
Magnesia
corrosion resistance
Corrosion resistance
corrosion
x ray diffraction
Diffraction
Wear of materials
Polarization
Corrosion

Keywords

  • Anodic oxide
  • Corrosion resistance
  • Magnesium alloys
  • Micro-arc anodic oxidation
  • Spark discharge

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

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AU - Da Forno, A.

AU - Bestetti, M.

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Y1 - 2010/12/15

N2 - Anodic oxidation in the micro-arc regime is one of the most investigated techniques used to coat magnesium alloys with ceramic coatings for protection from corrosion and wear. The composition of the electrolytic solution affects the anodic oxide layer morphology and composition and its behaviour in aggressive environments. In this paper the influence of the composition of the electrolytic solution on the anodic oxidation process of AM60B magnesium alloy and oxide properties is discussed. Scanning electron microscopy and x-ray diffraction were employed to assess morphology, crystallographic structure and composition of the anodic oxide. Electrochemical polarization tests were performed to evaluate the corrosion resistance behaviour of the coated magnesium alloys.

AB - Anodic oxidation in the micro-arc regime is one of the most investigated techniques used to coat magnesium alloys with ceramic coatings for protection from corrosion and wear. The composition of the electrolytic solution affects the anodic oxide layer morphology and composition and its behaviour in aggressive environments. In this paper the influence of the composition of the electrolytic solution on the anodic oxidation process of AM60B magnesium alloy and oxide properties is discussed. Scanning electron microscopy and x-ray diffraction were employed to assess morphology, crystallographic structure and composition of the anodic oxide. Electrochemical polarization tests were performed to evaluate the corrosion resistance behaviour of the coated magnesium alloys.

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KW - Corrosion resistance

KW - Magnesium alloys

KW - Micro-arc anodic oxidation

KW - Spark discharge

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