An electrochemical testing protocol for assessing the intrinsic corrosion-resistance of creep-resistant magnesium alloys in aqueous environments, and effects of passivating surface films anticipated to develop in the presence of engine coolants is under development. This work reports progress in assessing the relative corrosion resistance of the base metals (AMC-SC1, MRI-202S, MRI-230D, AM50 and 99.98% Mg) in a common test environment, based on a near-neutral pH buffered saline solution, found to yield particularly stable values for the open-circuit or corrosion potential. This approach was found to provide a platform for the eventual assessment of the durability of certain passivating layers expected to develop during exposure of the magnesium alloys to aqueous coolants.
Examination of the Corrosion Behavior of Creep-Resistant Magnesium Alloys in an Aqueous Environment
Sae Technical Papers
SAE World Congress & Exhibition ; 2007
2007-04-16
Aufsatz (Konferenz)
Englisch
Aqueous corrosion of experimental creep-resistant magnesium alloys
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