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Passivation And Potential Fluctuation Of Az31b Alloy In Alkaline Environments, Ana C. Bacco
Passivation And Potential Fluctuation Of Az31b Alloy In Alkaline Environments, Ana C. Bacco
Williams Honors College, Honors Research Projects
Magnesium (Mg) alloys are used in many industries because of their distinctive properties, but their high chemical reactivity and poor oxide film protection make them inferior. This project focused on investigating the effects of secondary phases and intermetallic particles (IMPs) on the corrosion behavior of AZ31B Mg alloy. The test solution was chloride free NaOH with varying pH levels between 10-14, as well as testing under deaerated conditions. The open circuit potential (OCP) measurements using AZ31B in static NaOH solutions showed potential fluctuation between approximately -1.6 VSCE (active state) and -0.4 VSCE (passive state) during the 24-h immersion. …