Abstract
The effect on corrosion resistance by Mo additions into Al alloys is examined. Two different doses of Mo are implanted into alloy surfaces by ion beam mixing. The unimplanted and implanted alloys are subjected to general and localized corrosion testing using sulfate and sulfate plus chloride solutions. Electrochemical properties obtained from potentiostatic polarization curves are correlated to the Mo content and the surface chemistry as measured by Auger Electron Spectroscopy. The results show that Mo implantation forms a complex oxide within the top 1000 Å of the Al surface and inhibits pitting attack of these alloys.
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