The ultimate goal of this research is to develop the ability to predict the performance of low voltage, aluminum, sacrificial anodes based on chemistry. Low voltage, aluminum, sacrificial anodes are attractive since their operating conditions reduce the likelihood of causing hydrogen embrittlement or stress corrosion cracking when used to protect high strength steels. In this study, open circuit potential, potentiostatic, galvanostatic and Tafel tests were performed on high-purity aluminum-based binary and ternary alloys containing Bi, Ga, In and Zn in an effort to understand the individual effects of each element and the interactions between these elements. The microstructures of the as-cast alloys and the corrosion surfaces after testing were characterized using electron microscopy.

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