Podcast
Questions and Answers
What is the necessary condition for selective leaching to occur in an alloy?
What is the necessary condition for selective leaching to occur in an alloy?
- The two elements must have significant difference in their electrode potentials (correct)
- The corrosion potential must be higher than the equilibrium potential of the nobler element
- Only one element should be present in significant amounts
- The two elements must have similar electrode potentials
Which term is used to describe the process of selective leaching in brass alloys?
Which term is used to describe the process of selective leaching in brass alloys?
- Denickelification
- Dezincification (correct)
- Dealuminofication
- Graphitic corrosion
How can selective leaching be prevented in alloys?
How can selective leaching be prevented in alloys?
- Adding more of the reactive element to the alloy
- Increasing the corrosion potential of the nobler element
- Using alloys with similar electrode potentials
- Avoiding exposure to the specific corrosive medium triggering the leaching (correct)
What is the main cause of sensitization in austenitic stainless steels?
What is the main cause of sensitization in austenitic stainless steels?
Which method is NOT recommended for the prevention of intergranular corrosion of sensitized stainless steels?
Which method is NOT recommended for the prevention of intergranular corrosion of sensitized stainless steels?
Exfoliation corrosion in aluminum alloys is most likely to occur due to?
Exfoliation corrosion in aluminum alloys is most likely to occur due to?
What is a common industrial alias for pitting corrosion?
What is a common industrial alias for pitting corrosion?
Which of the following is a characteristic feature of pitting corrosion?
Which of the following is a characteristic feature of pitting corrosion?
What process leads to the autocatalytic nature of pitting corrosion?
What process leads to the autocatalytic nature of pitting corrosion?
Which of the following is a common method to prevent selective leaching in metals?
Which of the following is a common method to prevent selective leaching in metals?
Flashcards are hidden until you start studying
