Theory of Passivation and Polarization in Active-Passive Metals

Course Overview

What does this course tell?
(Please note that the following overview content is from the original platform)
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.


We consider the value of this course from multiple aspects, and finally summarize it for you from three aspects: personal skills, career development, and further study:
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What skills and knowledge will you acquire during this course?
By taking this course, the student will acquire knowledge and skills related to passivation, corrosion and metallurgy. They will learn about Faraday's two-staged experiment, the ennoblement of metal in relation to passivity, the formation of porous deposit or barrier film on a metal surface, and the different passivation potentials. They will also understand the oxygen evolution in a situation showing the interaction between polarization and Pourbaix diagrams, the increase in current density due to transpassivity, and the formation of porous film or breakdown of passive film. Additionally, they will be familiar with the interaction between cathodic polarization and anodic polarization plots for systems in passivation mode, the different criteria for stable, complete primary passivity, the influence of the mechanical effect of passive film after reaching concentration, and the effect of concentration polarization of cathodic reaction on passivity. Finally, they will be able to comprehend the relationship existing between the corrosion rate to velocity and the current density.

How does this course contribute to professional growth?
Taking the course on the Theory of Passivation and Polarization in Active-Passive Metals can greatly contribute to one's professional growth. By enrolling in this course, individuals will gain a comprehensive understanding of passivation, corrosion, and metallurgy, which are essential topics in the field of materials science and engineering.

Through this course, individuals will learn about the concept of passivation and its significance in relation to metal ennoblement. They will also explore the formation of porous deposits or barrier films on metal surfaces, as well as different passivation potentials such as primary, complete, constant, and trans-passive. This knowledge will enable professionals to better analyze and interpret the behavior of metals in various environments, leading to more informed decision-making in their work.

Additionally, the course delves into the interaction between polarization and Pourbaix diagrams, specifically focusing on oxygen evolution and the increase in current density due to transpassivity. Professionals will gain insights into the formation and breakdown of passive films, as well as the relationship between cathodic and anodic polarization plots in passivation mode. This understanding will enhance their ability to design and optimize corrosion-resistant materials and systems.

Furthermore, the course covers the mechanical effect of passive films and the influence of concentration polarization on passivity. Professionals will learn about the correlation between corrosion rate, velocity, and current density, providing them with valuable tools for evaluating and predicting the performance of materials in corrosive environments.

By completing this course, professionals will acquire a deep understanding of passivation, polarization, and their role in the behavior of active-passive metals. This knowledge will not only enhance their technical expertise but also enable them to make more informed decisions in their professional practice. Overall, this course is a valuable resource for individuals seeking to expand their knowledge and skills in the field of materials science and engineering.

Is this course suitable for preparing further education?
This course is suitable for preparing further education in the field of passivation, corrosion and metallurgy. It covers topics such as Faraday's two-staged experiment, the ennoblement of metal in relation to passivity, the formation of porous deposit or barrier film on a metal surface, the different passivation potentials, oxygen evolution reaction, and the formation of porous film or breakdown of passive film. It also covers the interaction between cathodic polarization and anodic polarization plots for systems in passivation mode, the different criteria for stable, complete primary passivity, the influence of the mechanical effect of passive film after reaching concentration, and the effect of concentration polarization of cathodic reaction on passivity.