Surface Area Effect on Electrochemical Potential Noise of Aluminum Alloys in Chloride Media

摘要: The magnitude of electrochemic al potential noise aluminum alloys 1100, 2024 and 5052 in naturally aerated chloride solutions decreased approximately with increasing square root specimen surface area contact the electrolyte. experimental behavior was consistent predictions a simplified model that assumed random generation similar independent anodic events at rate proportional only to area. fluctuation from each individual event due corresponding increase interfacial admittance. This factor, coupled statistical addition contribution events, resulted output reproducing observed inverse dependence on applicability demonstrated by nearly replicating when using as input polarization parameters were obtained electrochemical impedance potentiodynamic tests.