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NACE CIP Level 1 Study Guide Questions Correctly Answered. Corrosion - CORRECT ANSWER The deterioration of a material, usually a metal, that results from a reaction with its enviroment Passivation - CORRECT ANSWER a reduction of the anodic reaction rate of an electrode involved in corrosion...

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  • November 22, 2024
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NACE CIP Level 1 Study Guide
Questions Correctly Answered.
Corrosion - CORRECT ANSWER The deterioration of a material, usually a metal, that results from a
reaction with its enviroment



Passivation - CORRECT ANSWER a reduction of the anodic reaction rate of an electrode involved in
corrosion



What are the elements of a corrosion cell? - CORRECT ANSWER Anode, cathode, return path, electrolyte



Describe what happens at the anode - CORRECT ANSWER Is that part of the metal that corrodes
(dissolves in the electrolyte). It forms positively charged ions that are conducted to the cathode.
Oxidation requires a complementary reaction at the cathode.



What is the function of the electrolyte - CORRECT ANSWER A chemical substance containing ions that
migrate in an electric field



What is the function of the metallic pathway - CORRECT ANSWER (i.e. return path) this connects the
anode and cathode allowing passage of electrons generated at the anode to the cathode



What is the galvanic series - CORRECT ANSWER A list of metals and alloys arranged according to their
corrosion potentials in a given environment



The general rules of galvanic corrosion are: - CORRECT ANSWER (i.e. dissimilar metal) When dissimilar
metals are connected, the most active (anodic) metal corrodes more rapidly, while the more noble
(cathodic) metal is better protected and coorodes less rapidly. As the potential difference increases, the
rate of galvanic corrosion increases.



Name at least 5 factors that affect the rate of corrosion - CORRECT ANSWER Oxygen (lowers, lowers),
temperature (lowers, lowers), chemical salts (less, less)

humidity (wetter, more corrosion), pollutatnts/acid gases (lower, lower)

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