Galvanic Coupling and Corrosion Rate in Active Metals
Study galvanic coupling and corrosion rate in active metals, as well as sacrificial anode effect, in this free course.
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CertificationView course modules
This course begins by introducing you to the different values of half-cell, anodic and cathodic reactions, and the relationship between exchange current density and corrosion rate in a metal. It will introduce to you the parallel line of individual Tafel lines for hydrogen evolution reaction on zinc and platinum surfaces. The corrosion current density of zinc and the area factor effect will also be covered in this free online course.
You will then look at galvanization as another form of cathodic protection where zinc acts as a sacrificial anode and iron is protected. Learn about the sacrificial anode effect in reference to the atmosphere and the environment, as well as the effect of magnesium and zinc on iron corrosion when they are galvanically coupled. This course will also teach you about the dissolution rate of zinc and iron when separately placed or added in an electrolyte, as well as the mixed potential point of the impressed current cathodic protection.
Furthermore, you get will familiar with the effect of velocity on the corrosion rate, as well as the relationship between velocity and corrosion rate, current density and overvoltage. You will also learn about the standard hydrogen electrode and saturated calomel electrode. So, register for this course now and start your next learning journey today if you are interested in metallurgy, especially galvanic coupling in active metals.Start Course Now
Area Effect Factor and Galvanic Coupling in Active Metals
Area Effect and Galvanic Coupling in Active Metals - Learning Outcomes
Effect of Exchange Current Density on Corrosion Rate of an Active Metal
Area Effect of the Cathodic and Anodic Component
Area Effect on the Current and Corrosion Rate
Corrosion Processes on the basis of Mixed Potential Theory: Numerical Analysis
Galvanic Coupling between Two Active Metals
Area Effect Factor and Galvanic Coupling in Active Metals - Lesson Summary
Corrosion Rate of Active Metals in a Concentration Controlled Environment
Corrosion Rate of Active Metals in a Concentration Controlled Environment - Learning Outcomes
Theory of Sacrificial Anode Steel Objects Protection
Effect of Two Active Metals on Fe–Corrosion
Corrosion of Metals in Controlled Concentration
Effect of Velocity on Corrosion Rate
Numerical Analysis in Polarization
Corrosion Rate of Active Metals in a Concentration Controlled Environment - Lesson Summary
Upon successful completion of this course, you should be able to:
- Discuss the cathodic, anodic and half-cell reactions can have different values
- Analyze the relationship between exchange current density and corrosion rate
- Outline the parallel line of individual Tafel lines for hydrogen evolution reaction on a zinc surface
- Evaluate the concepts of galvanization and cathodic protection
- Discuss the effect of velocity on the corrosion rate in both types of controlled environments
- Analyze the dissolution rate of zinc and iron when placed or added in an electrolyte
- Outline the relationship between corrosion current density and the Tafel slope
- Explain how the standard calomel electrode works.
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