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DOI: 10.1016/b978-044452787-5.00003-2
  • Chemistry
  • Design
  • Physics


Corrosion is an irreversible interfacial reaction of a material that is most of the time due to electrochemical phenomena, which means that it is the consequence of coupled anodic and cathodic reactions taking place at a metal–electrolyte interface and characterized by some key parameters such as current, potential, concentration of reactants, and reaction products. As a direct observation of the corroding surface is often a very difficult or even an unfeasible task, corrosion phenomena are more easily and deeply studied, understood, monitored, and even predicted by the adequate electrochemical survey of these parameters, which constitutes the cornerstone of the science of electrochemistry. This chapter is thus aimed at introducing the basic concepts of electrochemistry related to corrosion to show to the reader how the different variables have to be handled to build up the thermodynamic and kinetic basic knowledge crucial for anyone involved in corrosion inspection, design, and maintenance or in corrosion-related research.

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