NACE CP1 EXAM QUESTIONS &
VERIFIED CORRECT ANSWERS
corrosion - CORRECT ANSWER The deterioration of a substance, usually a metal from a reaction
with its environment
Passivation - CORRECT ANSWER A layer of oxides formed on the surface of a metal that
provides corrosion protection.
the elements of a corrosion cell - CORRECT ANSWER Anode, cathode, metallic pathway,
electrolyte
what happens at the anode - CORRECT ANSWER The metal dissolves into the electrolyte
the function of the metallic pathway - CORRECT ANSWER Allows the flow of electrons to
connect the corrosion cell
galvanic series - CORRECT ANSWER A listing in order of reactivity ( more or less noble) in
seawater 25c
The general rules of galvanic corrosion - CORRECT ANSWER The less noble (more reactive)
metal when connected to a more noble (or less reactive metal) will corrode preferentially.
the five most important factors that affect the rate of corrosion. - CORRECT ANSWER Humidity,
oxygen, chemical salts, pollutants, temperature
VERIFIED CORRECT ANSWERS
corrosion - CORRECT ANSWER The deterioration of a substance, usually a metal from a reaction
with its environment
Passivation - CORRECT ANSWER A layer of oxides formed on the surface of a metal that
provides corrosion protection.
the elements of a corrosion cell - CORRECT ANSWER Anode, cathode, metallic pathway,
electrolyte
what happens at the anode - CORRECT ANSWER The metal dissolves into the electrolyte
the function of the metallic pathway - CORRECT ANSWER Allows the flow of electrons to
connect the corrosion cell
galvanic series - CORRECT ANSWER A listing in order of reactivity ( more or less noble) in
seawater 25c
The general rules of galvanic corrosion - CORRECT ANSWER The less noble (more reactive)
metal when connected to a more noble (or less reactive metal) will corrode preferentially.
the five most important factors that affect the rate of corrosion. - CORRECT ANSWER Humidity,
oxygen, chemical salts, pollutants, temperature
