Chapter 7 Coating Fundamentals

Question 1

1. List three desirable properties of a coating.

Answer 1

Water Resistance
Ease of Application
Adhesion to Substrate
Chemical Resistance

Question 2

2. Two broad classifications of a coating are:

Answer 2

Organic coatings

Inorganic coatings

Question 3

What are two primary components of a liquid applied coating?

Answer 3

Pigment
Vehicle (Resin or Binder & Solvent)
Additives

Question 4

Describe the three methods by which a coating provides corrosion control

Answer 4

Barrier coatings impede the ingress of oxygen, water, and soluble salts

Inhibitive coatings serve as a barrier and actively slow down the reaction occuring at the anode, cathode, or both

Sacrifical coatings use a metal that is anodic to steel and which corrodes preferentially

Question 5

What are the three different ways a coating can adhere to the surface?

Answer 5

Chemical, Polar, and Mechanical or a combination of the three