Corrosion resistant manganese phosphate coatings for Mg AM-lite alloy

X. B. Chen, N. Birbilis, T. B. Abbott

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

Abstract

A facile chromate-free method to deposit manganese phosphate conversion coatings upon magnesium alloy AM-lite for corrosion protection was developed. Surface treatment to remove the intermetallic particles from surface was applied prior to coating process. Coating nature, including morphology, phase composition, and corrosion resistance in NaCl solution was characterised by using scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDX), Xray diffraction (XRD), potentiodynamic polarisation and salt spray. The results indicate that the conversion coating is an amorphous structure, containing Mg, O, Mn, and P in a complex surface chemistry. Such surface coating was able to significantly improve the corrosion susceptibility of AMlite alloy.

Original languageEnglish
Title of host publicationAnnual Conference of the Australasian Corrosion Association 2012
Subtitle of host publicationMelbourne, Victoria, Australia; 11-14 November 2012
Place of PublicationKerrimuir VIC Australia
PublisherAustralasian Corrosion Association
Pages630-636
Number of pages7
ISBN (Print)9781622769698
Publication statusPublished - 2012
EventAustralasian Corrosion Association (ACA) Conference 2012: Corrosion and Prevention - Crown Conference Centre, Melbourne, Australia
Duration: 11 Nov 201214 Nov 2012

Conference

ConferenceAustralasian Corrosion Association (ACA) Conference 2012
Abbreviated titleCP 2012
CountryAustralia
CityMelbourne
Period11/11/1214/11/12
OtherCorrosion Management for a Sustainable World: Transport, Energy, Mining, Life Extension and Modelling

Keywords

  • Conversion coating
  • Corrosion resistance
  • Magnesium
  • Manganese phosphate
  • Surface engineering

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