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Diploma in Electrochemical Reactions in Corrosion
Intermediate Level

Diploma in Electrochemical Reactions in Corrosion

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  3. Diploma in Electrochemical Reactions in Corro...

Diploma in Electrochemical Reactions in Corrosion

Study electrochemical reactions in corrosion, as well as the oxidation mechanisms of corrosion, in this free course.
Two important aspects of electrochemical reactions are covered in this free online course. You will learn about the features and elements of passivation, as well as the interaction between polarization and th... Two important aspects of electrochemical reactions are covered in this free online course. You will learn about the features and elements of passivation, as well as the interaction between polarization and the Pourbaix diagram. You will also be able to explain the calculation of Pilling-Bedworth ratio in different metals, as well as plot the Ellingham diagram. Start this course today to improve your understanding of electrochemical reactions.
COURSE PUBLISHER NPTELUniversity lecturer curated courses
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What You Will Learn In This Free Course

  • Distinguish between activation and ...
  • Describe the mixed potential theory...
  • Explain the derivation of the Tafel...
  • Discuss the evolution of the micros...
  • Distinguish between activation and concentration polarization
  • Describe the mixed potential theory
  • Explain the derivation of the Tafel equation and the Tafel slope
  • Discuss the evolution of the microstructure of pearlite
  • Identify the elements and features of passivation
  • Analyze the interaction between polarization and the Pourbaix diagram
  • Explain the corrosion rate of metals in a concentration-controlled environment
  • Analyze the effect of galvanic coupling in active-passive metals
  • Discuss how to calculate Pilling-Bedworth ratio
  • Outline the steps for drawing the Ellingham diagram
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Course Modules
Course Description
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Module

Aspects of Electrochemical Polarization and Mixed Potential Theory

In this module, you will be introduced to the two important aspects of electrochemical reactions, as well as their interactions with mixed potential theory. You will also be introd... Read More In this module, you will be introduced to the two important aspects of electrochemical reactions, as well as their interactions with mixed potential theory. You will also be introduced to the concepts of Tafel equation, cathodic and anodic reactions, as well as how to plot appropriate graphs representing the reactions and the formation of the Helmholtz double-layer. Read Less
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Module

Corrosion Processes on the basis of Mixed Potential Theory

In this module, you will be introduced to the evolution of microstructure in pearlite, the concept of an optical microscope, as well as their formation. You will also be introduced... Read More In this module, you will be introduced to the evolution of microstructure in pearlite, the concept of an optical microscope, as well as their formation. You will also be introduced to the concepts of etching, equilibrium potentials, corrosion processes, galvanic coupling and depolarization effects. Read Less
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Module

Area Effect Factor and Galvanic Coupling in Active Metals

In this module, you will be introduced to the different values of half-cell, anodic and cathodic reactions, as well as the parallel line of individual Tafel lines for hydrogen evol... Read More In this module, you will be introduced to the different values of half-cell, anodic and cathodic reactions, as well as the parallel line of individual Tafel lines for hydrogen evolution reaction on zinc and platinum. You will also be introduced to the area effect on the corrosion of an active component, as well as the galvanic coupling between two active metals in an electrolyte. Read Less
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Module

Corrosion Rate of Active Metals in a Concentration Controlled Environment

In this module, you will be introduced to the two segments of cathodic protection which are the sacrificial anode and impressed current cathodic protection, as well as the effect o... Read More In this module, you will be introduced to the two segments of cathodic protection which are the sacrificial anode and impressed current cathodic protection, as well as the effect of magnesium and zinc on iron corrosion when they are galvanically coupled. You will also be introduced to how corrosion current density can be affected in both activation, as well as concentration controlled environment. The relationship between velocity and corrosion rate will also be highlighted in this module. Read Less
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Module

Diploma in Electrochemical Reactions in Corrosion - First Assessment

You must score 80% or more to pass.
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Module

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 b... Read More 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. Read Less
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Module

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 ca... Read More 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. Read Less
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Module

Corrosion Resistance of a Metal and Pilling-Bedworth Ratio

In this module, you will be introduced to the anodic protection of active-passive metal due to the lesser current flow in the circuit for the same degree of protection, as well as ... Read More In this module, you will be introduced to the anodic protection of active-passive metal due to the lesser current flow in the circuit for the same degree of protection, as well as the relative corrosion response of a metal in an electrolyte. You will also be introduced to the different stages of oxidation, as well as how metals react with gaseous oxygen to form metal oxides. Read Less
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Module

Oxidation Mechanisms and Ellingham Diagram

In this module, you will be introduced to the calculation of the Pilling-Bedworth Ratio in different metals, as well as the fundamental aspects of oxidation which are thermodynamic... Read More In this module, you will be introduced to the calculation of the Pilling-Bedworth Ratio in different metals, as well as the fundamental aspects of oxidation which are thermodynamics of oxide formation and kinetic analysis of oxide growth. You will also be introduced to the plotting of the Ellingham diagram, as well as how the oxidation process occurs in metal deficient diffusion of the interstitial cation. Read Less
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Module

Diploma in Electrochemical Reactions in Corrosion - Second Assessment

You must score 80% or more to pass.
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Module

Course assessment

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Knowledge & Skills You Will Learn

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