Theory of Passivation and Polarization
Get familiar with passivation, ennoblement, cathodic and anodic polarization, and more in this free in-depth course about this special metal-finishing process.
In this free online course on the Theory of Passivation and Polarization in Active-Passive Metals, you will learn about the ennoblement of metal in relation to passivity, as well as the formation of porous deposits or barrier film on a metal surface. Study, too, the effects of concentration polarization of cathodic reaction on the passivity of an active-passive metal.
What You Will Learn In This Free Course
Theory of Passivation and Pourbaix Diagram
In this module, you will be introduced to the features, elements and types of passivation, as well as the interaction between polarization and the Pourbaix diagram. You will also be introduced to Faraday’s two-staged experiment on converting iron with HNO3 solution from the passive to the active stage, as well as the ennoblement of metal in relation to passivity.
Anodic and Cathodic Polarization in Active-Passive Metals
In this module, you will be introduced to the interaction of cathodic and anodic polarization plots for a system in passivation mode, as well as the effect of the interaction of cathodic polarization at different plots. You will also be introduced to the different criteria for stable passivity, complete passivity and primary passivity in relation to the anodic and cathodic polarization line.
Course assessment
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