Paper Title:
Surface Characteristics of Magnesium Alloys Treated by Anodic Oxidation Using Pulse Power
  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.

  Info
Periodical
Advanced Materials Research (Volumes 47-50)
Edited by
Alan K.T. Lau, J. Lu, Vijay K. Varadan, F.K. Chang, J.P. Tu and P.M. Lam
Pages
1290-1293
DOI
10.4028/www.scientific.net/AMR.47-50.1290
Citation
Y. K. Kim, M. H. Lee, M. N. Prasad, I. S. Park, M. H. Lee, K. W. Seol, T. S. Bae, "Surface Characteristics of Magnesium Alloys Treated by Anodic Oxidation Using Pulse Power", Advanced Materials Research, Vols. 47-50, pp. 1290-1293, 2008
Online since
June 2008
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Price
$32.00
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