Chapter 13: Corrosion

Question 1

What are the three things needed for corrosion?

Answer 1

water, oxygen, and salt (chloride)

Question 2

What are some forms of corrosion?

Answer 2

rust
pitting
cavitation

Question 3

What is rust?

Answer 3

uniform corrosion that can happen anywhere that is exposed, use paint to deter

Question 4

What is pitting?

Answer 4

happens with metals with film,

it is a sharp little indent

Question 5

What is cavitation?

Answer 5

rapid pressure changes create bubbles that explode and erode metals

Question 6

Oxidation and reduction compares to what?

Answer 6

oxidation = anode = ne --> breaks e from equation
ne = reduction = cathode --> adds e to equation

Question 7

What is a corrosion potential?

Answer 7

potential a material exhibits when it is corroding