Paper Title:
Corrosion Properties of Supersaturated Magnesium Alloy Systems
  Abstract

The range of applications for magnesium alloys is still limited due to their relatively poor corrosion behavior. In recent years, various new magnesium alloys were developed, some of them with improved corrosion properties, thus opening new fields of application. However, the number of alloying elements for the use in conventional cast processes is limited due to their interaction with liquid magnesium, other alloying elements or large differences in the melting temperatures. The possibilities for grain refinement by post-processing are also restricted. PVD techniques can help to produce supersaturated precipitation free and microcrystalline magnesium layers. Using ion beam and magnetron sputtering, binary or ternary Mg-Al, Mg-Ti and Mg-Sn alloy systems as well as standard alloys (AM50, AZ91 and AE42) were deposited on silicon and on magnesium substrates. The effect of the microstructure on the corrosion properties was studied by comparing as cast material and PVD coatings using potentiodynamic polarization, linear polarization resistance, and electrochemical impedance techniques.

  Info
Periodical
Materials Science Forum (Volumes 539-543)
Main Theme
Edited by
T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran
Pages
1679-1684
DOI
10.4028/www.scientific.net/MSF.539-543.1679
Citation
C. Blawert, V. Heitmann, W. Dietzel, M. Störmer, Y. Bohne, S. Mändl, B. Rauschenbach, "Corrosion Properties of Supersaturated Magnesium Alloy Systems", Materials Science Forum, Vols. 539-543, pp. 1679-1684, 2007
Online since
March 2007
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Price
$32.00
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