ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The range of applications for magnesium alloys is still limited due to their relatively poorcorrosion behavior. In recent years, various new magnesium alloys were developed, some of themwith improved corrosion properties, thus opening new fields of application. However, the number ofalloying elements for the use in conventional cast processes is limited due to their interaction withliquid magnesium, other alloying elements or large differences in the melting temperatures. Thepossibilities for grain refinement by post-processing are also restricted. PVD techniques can help toproduce supersaturated precipitation free and microcrystalline magnesium layers.Using ion beam and magnetron sputtering, binary or ternary Mg-Al, Mg-Ti and Mg-Sn alloysystems as well as standard alloys (AM50, AZ91 and AE42) were deposited on silicon and onmagnesium substrates. The effect of the microstructure on the corrosion properties was studied bycomparing as cast material and PVD coatings using potentiodynamic polarization, linear polarizationresistance, and electrochemical impedance techniques
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.1679.pdf
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