Theory of Passivation and Polarization in Active-Passive Metals
A free online course on theory of passivation in active-passive metals, as well as the formation of porous deposits.
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Theory of Passivation and Polarization in Active-Passive Metals is a free online course that begins by introducing you to the concept of ‘passivation’, as well as Faraday's two-staged experiment on converting iron with HNO3 (nitric acid) solution. This course will teach you the ennoblement of metal in relation to passivity, as well as the formation of porous deposit or barrier film on a metal surface. The different passivation potentials such as primary, complete, constant and trans-passive will also be covered in the material.
It then explains the oxygen evolution in a situation showing the interaction between polarization and Pourbaix diagrams. You will learn about the increase in current density due to transpassivity, oxygen evolution reaction, and the formation of porous film or breakdown of passive film. This course will familiarize you about the interaction between cathodic polarization and anodic polarization plots for systems in passivation mode, as well as the different criteria for stable, complete primary passivity.
Furthermore, you will study the influence of the mechanical effect of passive film after reaching concentration, as well as the effect of concentration polarization of cathodic reaction on passivity. The relationship existing between the corrosion rate to velocity and the current density will also be covered. This free online course will be of great use to anyone wanting an in-depth understanding of passivation, corrosion and metallurgy. If you register for this course now, you can start your next learning journey today.Start Course Now
Theory of Passivation and Pourbaix Diagram
Theory of Passivation and Pourbaix Diagram - Learning Outcomes
Numerical Problems and Passivation
Theory of Passivation
Features and Elements of Passivation
Interaction between Passivation and Pourbaix Diagram
Changes in Current Density
Theory of Passivation and Pourbaix Diagram - Lesson Summary
Anodic and Cathodic Polarization in Active-Passive Metals
Anodic and Cathodic Polarization in Active-Passive Metals - Learning Outcomes
Passivity in Mixed Potential Theory
Interaction of Cathodic Polarization with an Active-Passive Metal
Interaction of Anodic Polarization with an Active-Passive Metal
Passivation and Mixed Potential Theory - Case Study
The Effect of Concentration Polarization of Cathodic Reaction
Anodic and Cathodic Polarization in Active-Passive Metals - Lesson Summary
Upon successful completion of this course, you should be able to:
- Evaluate the concept of passivation
- List the elements of passivation
- Evaluate the ennoblement of metal in relation to passivity
- Analyze the formation of layers on a metal surface
- Explain the types of passivation potentials
- Explain the interaction of cathodic polarization and anodic polarization plots
- Outline the effect of interaction between complete passivation potential and anodic polarization
- Identify the effect of the interaction of cathodic polarization at different plots of an active-passive metal
- Analyze the criteria for the different types of passivity in anodic and cathodic polarization line
- State the mechanical effect of the passive film
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