Chapter 13: Corrosion Flashcards
1
Q
What are the three things needed for corrosion?
A
water, oxygen, and salt (chloride)
2
Q
What are some forms of corrosion?
A
rust
pitting
cavitation
3
Q
What is rust?
A
uniform corrosion that can happen anywhere that is exposed, use paint to deter
4
Q
What is pitting?
A
happens with metals with film,
it is a sharp little indent
5
Q
What is cavitation?
A
rapid pressure changes create bubbles that explode and erode metals
6
Q
Oxidation and reduction compares to what?
A
oxidation = anode = ne --> breaks e from equation ne = reduction = cathode --> adds e to equation
7
Q
What is a corrosion potential?
A
potential a material exhibits when it is corroding
