Kinetic Passivation Effect of Localized Differential Aeration on Brass (pages 49–57)
Dr. Volodymyr Kuznetsov, Dr. Arturo Estrada-Vargas, Dr. Artjom Maljusch, Dr. Balázs B. Berkes, Prof. Dr. Aliaksandr S. Bandarenka, Prof. Dr. Ricardo M. Souto and Prof. Dr. Wolfgang Schuhmann
Article first published online: 28 OCT 2015 | DOI: 10.1002/cplu.201500398
Waterline passivation: A differential aeration cell formed at the meniscus between air and electrolyte invokes local corrosion of brass. In the presence of inhibitors, a short-term passivation effect takes place that can be analyzed by spectroscopic and local electrochemical techniques (see figure). Simultaneous rapid cathodic alkalinization and dezincification lead to the rapid formation of a barrier layer that is temporarily superior to the bulk layer.