NACE CIP LEVEL 1 STUDY
GUIDE 105 QUESTION AND
ANSWER 2025 GRADED A+
[Document subtitle]
[DATE]
[COMPANY NAME]
[Company address]
, 1. Define Corrosion
The deterioration of a substance, usually a metal, from a reaction with its
environment.
2. What is passivation?
A layer of oxides formed on the surface of a metal that provides corrosion
protection.
3. What is an example of passivation?
Stainless Steel.
4. What are the elements of a corrosion cell?
Anode, Cathode, Metallic Pathway, Electrolyte.
5. Describe what happens at the anode.
The metal dissolves into the electrolyte.
6. What is the function of the electrolyte?
Allows the passage of ions to connect the corrosion cell.
7. What is the function of the metallic pathway?
Allows the flow of electrons to connect the corrosion cell.
8. What is the galvanic series?
A listing of metals in order of reactivity (more or less noble) in seawater at 25°C.
9. The general rules of galvanic corrosion are:
The less noble (or more reactive) metal when connected to a more noble (or less
reactive) metal will corrode preferentially.
10. Name the five most important factors that affect the rate of corrosion.
Humidity, oxygen, chemical salts, pollutants, temperature.
11. General corrosion is:
Results in a relatively uniform loss of material over the entire surface, results in a
general thinning of the affected surface, relatively easy to inspect, does not
cause catastrophic failures.
12. Localized corrosion is:
Typically pitting and crevice corrosion. It is typically of the most concern as
damage is concentrated and loss of integrity or structural failure can result.
13. List some of the common tools/methods used for corrosion control.
Design, Inhibitors, Material Selection, Cathodic Protection, Protective Coatings,
Splash Zone Systems, Alteration of the Environment.
GUIDE 105 QUESTION AND
ANSWER 2025 GRADED A+
[Document subtitle]
[DATE]
[COMPANY NAME]
[Company address]
, 1. Define Corrosion
The deterioration of a substance, usually a metal, from a reaction with its
environment.
2. What is passivation?
A layer of oxides formed on the surface of a metal that provides corrosion
protection.
3. What is an example of passivation?
Stainless Steel.
4. What are the elements of a corrosion cell?
Anode, Cathode, Metallic Pathway, Electrolyte.
5. Describe what happens at the anode.
The metal dissolves into the electrolyte.
6. What is the function of the electrolyte?
Allows the passage of ions to connect the corrosion cell.
7. What is the function of the metallic pathway?
Allows the flow of electrons to connect the corrosion cell.
8. What is the galvanic series?
A listing of metals in order of reactivity (more or less noble) in seawater at 25°C.
9. The general rules of galvanic corrosion are:
The less noble (or more reactive) metal when connected to a more noble (or less
reactive) metal will corrode preferentially.
10. Name the five most important factors that affect the rate of corrosion.
Humidity, oxygen, chemical salts, pollutants, temperature.
11. General corrosion is:
Results in a relatively uniform loss of material over the entire surface, results in a
general thinning of the affected surface, relatively easy to inspect, does not
cause catastrophic failures.
12. Localized corrosion is:
Typically pitting and crevice corrosion. It is typically of the most concern as
damage is concentrated and loss of integrity or structural failure can result.
13. List some of the common tools/methods used for corrosion control.
Design, Inhibitors, Material Selection, Cathodic Protection, Protective Coatings,
Splash Zone Systems, Alteration of the Environment.
