Mastering Corrosion Engineering
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Questions and Answers

Which of the following best describes corrosion?

  • The process of refining a metal into a chemically stable form
  • The process of converting a metal into a more stable oxide (correct)
  • The process of deteriorating materials by physical reaction
  • The process of preventing oxidation in metals

    • What is the most common cause of corrosion in metals?

  • Hydrogen
  • Oxygen (correct)
  • Nitrogen
  • Carbon dioxide

    • Which of the following is an example of electrochemical corrosion?

  • Evaporation
  • Rusting (correct)
  • Melting
  • Freezing

    • Does corrosion only occur in metals?

    <p>No, it can also occur in ceramics and polymers</p> Signup and view all the answers

    What are some of the effects of corrosion on materials and structures?

    <p>Deterioration of mechanical strength, appearance, and permeability</p> Signup and view all the answers

    Which type of cathodic protection uses a sacrificial anode?

    <p>Galvanic cathodic protection</p> Signup and view all the answers

    What is the purpose of cathodic protection?

    <p>To prevent corrosion on metallic surfaces</p> Signup and view all the answers

    What is the difference between galvanic and impressed current cathodic protection?

    <p>Galvanic cathodic protection uses a sacrificial anode, while impressed current cathodic protection uses an external power source</p> Signup and view all the answers

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