Surface characteristics of magnesium alloys treated by anodic oxidation using pulse power

  • Kyong Kim Yu
  • , Hyung Lee Man
  • , Madhav Nepane Prasad
  • , Song Park Il
  • , Ho Lee Min
  • , Won Seol Kyeong
  • , Sung Bae Tae

Research output: Contribution to conferenceConference paperpeer-review

Abstract

Magnesium has been proposed as an implant metal due to its low weight and inherent biocompatibility. However, it use as a biomaterial is seriously limited by its poor corrosion n resistance. Die-cast AZ91D and rolled AZ31B alloys, which are commercial magnesium alloys, were used in this study. After plasma anodization, SEM showed that the surface had a relatively high porosity with some micro-cracks. EDX revealed Mg, Al and Zn on the surface of the samples before anodization. After anodization , there was an increase in the oxygen EDX peak intensity with a concomitant decrease in the magnesium intensity . Anodized AZ91D had the best corrosion resistance according to the potentiodynamic polarization curves. After immersion in Hanks solution for 10 days, the untreated AZ31B sample had the highest pH value due to formation of OH - on the film surface.

Original languageEnglish
Title of host publicationMulti-functional Materials and Structures - International Conference on Multifunctional Materials and Structures
PublisherTrans Tech Publications
Pages1290-1293
Number of pages4
ISBN (Print)0878493786, 9780878493784
StatePublished - 2008
EventMulti-functional Materials and Structures - International Conference on Multifunctional Materials and Structures - Hong Kong, P.R., China
Duration: 2008.07.282008.07.31

Publication series

NameAdvanced Materials Research
Volume47-50 PART 2
ISSN (Print)1022-6680

Conference

ConferenceMulti-functional Materials and Structures - International Conference on Multifunctional Materials and Structures
Country/TerritoryChina
CityHong Kong, P.R.
Period08.07.2808.07.31

Keywords

  • AZ31B
  • AZ91D
  • Magnesium oxidation
  • Pulse supply

Quacquarelli Symonds(QS) Subject Topics

  • Engineering & Technology

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