Effect of titania nanoparticles on micro-arc anodizing of AM60B magnesium alloy

Anna Da Forno, Liu Ke, Massimiliano Bestetti

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Oxide films have been produced on the AM60B magnesium alloy using micro-arc oxidation process in an environmentally friendly alkaline solution with and without addition of titania nanoparticles. The surface morphology and cross-section of anodized samples were analyzed by Scanning Electron Microscopy (SEM) coupled with EDS and the phase composition was investigated by X-ray Diffraction (XRD). Hardness tests were performed by means of a micro-hardness tester and the corrosion resistance was evaluated in 3.5% NaCl solution using potentiodynamic polarization tests. Addition of titania nanoparticles doesn't affect corrosion resistance significantly, but the oxide films produced in titania-containing solution are denser, thicker and have more uniform morphology. In the oxides produced at 130V-140V in presence of titania (4g dm-3) the hardness raised up to 550 HV (10mN, 10 s). The addition of titania nanoparticles in the solution could be an interesting way to synthesize hard coatings on magnesium alloy AM60B by micro-arc oxidation in a short process time (10 minutes).

Original languageEnglish
Title of host publicationPRICM7
Pages1876-1879
Number of pages4
Volume654-656
DOIs
Publication statusPublished - 2010
Externally publishedYes
Event7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7 - Cairns, QLD, Australia
Duration: 2 Aug 20106 Aug 2010

Publication series

NameMaterials Science Forum
Volume654-656
ISSN (Print)0255-5476

Conference

Conference7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7
CountryAustralia
CityCairns, QLD
Period2.8.106.8.10

Keywords

  • Corrosion resistance
  • Hardness
  • Magnesium alloys
  • Micro-arc anodizing
  • Titania nanoparticles

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Da Forno, A., Ke, L., & Bestetti, M. (2010). Effect of titania nanoparticles on micro-arc anodizing of AM60B magnesium alloy. In PRICM7 (Vol. 654-656, pp. 1876-1879). (Materials Science Forum; Vol. 654-656). https://doi.org/10.4028/www.scientific.net/MSF.654-656.1876