Podcast
Questions and Answers
What is the driving force necessary for electrons to flow between anodic and cathodic areas in corrosion?
What is the driving force necessary for electrons to flow between anodic and cathodic areas in corrosion?
Difference in potential
Why does corrosion always occur at the anodic area of the metal?
Why does corrosion always occur at the anodic area of the metal?
Due to the oxidation process
What is the main cathodic reaction involving hydrogen in a deaerated and acidic medium?
What is the main cathodic reaction involving hydrogen in a deaerated and acidic medium?
2H+ (aq) + 2e− → H2
In a deaerated and neutral medium, what reaction leads to the liberation of H2 and formation of OH− ions?
In a deaerated and neutral medium, what reaction leads to the liberation of H2 and formation of OH− ions?
Which cathodic reaction involves the reduction of oxygen in an aerated and neutral medium?
Which cathodic reaction involves the reduction of oxygen in an aerated and neutral medium?
What is the most common cathode reaction in corrosion due to the presence of dissolved oxygen?
What is the most common cathode reaction in corrosion due to the presence of dissolved oxygen?
What is galvanic corrosion?
What is galvanic corrosion?
Which metal acts as the anode in galvanic corrosion?
Which metal acts as the anode in galvanic corrosion?
What function does the more resistant metal serve in galvanic corrosion?
What function does the more resistant metal serve in galvanic corrosion?
Explain the concept of microgalvanic cells.
Explain the concept of microgalvanic cells.
What process occurs at the anodic areas in galvanic corrosion?
What process occurs at the anodic areas in galvanic corrosion?
In which direction does electron flow happen in galvanic corrosion?
In which direction does electron flow happen in galvanic corrosion?
What happens at anodic sites in the corrosion process?
What happens at anodic sites in the corrosion process?
What is the overall reaction in the corrosion process involving iron and oxygen?
What is the overall reaction in the corrosion process involving iron and oxygen?
What is the difference between dry corrosion and wet corrosion?
What is the difference between dry corrosion and wet corrosion?
What is the purpose of the galvanic series?
What is the purpose of the galvanic series?
Describe the formation of yellow rust in the presence of oxygen.
Describe the formation of yellow rust in the presence of oxygen.
What happens if the supply of oxygen is limited in the corrosion process?
What happens if the supply of oxygen is limited in the corrosion process?
