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2070 |
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Wednesday, May 05, 2010, Sophia Room 3:00 PM Wear Protection 3 |
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Corrosion behavior of AZ31 magnesium alloy coated with zinc-nickel by low pressure cold spray |
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Julio Villafuerte* / CenterLine Ltd.
, Canada Roman Maev / University of Windsor, Canada John Phelan/ University of Windsor, Canada Dmitry Dzhurinskiy/ University of Windsor, Canada Elena Maeva/ University of Windsor, Canada Volf Leshchynsky/ University of Windsor, Canada |
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One effective method of preventing corrosion of magnesium alloys is by applying a metallic protective coating to the magnesium-based substrate. Zn?Ni powder mixtures were deposited onto AZ31 magnesium alloy by Low Pressure Cold Spray (LPCS). The morphology and phase composition of the coatings were characterized by Scanning Electron Microscopy (SEM) and electron dispersive spectroscopy (EDS). The results revealed that the structure and properties of LPCS Zn-Ni coatings depended on LPCS process parameters. Salt spray testing (ASTM B117) and electrochemical polarization testing indicated that that the presence of thick and dense LPCS Zn-Ni coatings could significantly improve the corrosion behavior of AZ31 magnesium alloy. |