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AMPP CIP Level 1 Theory Questions with Complete Verified Solutions 2024/2025
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AMPP CIP Level 1 Theory Questionswith Complete Verified Solutions
2024/2025
What is corrosion?
The deterioration of a metal or alloy that results from an electrochemical reaction with its
environment.
What needs to be present in order for corrosion to occur?
Anode
Cathode
Metallic Pathway
Electrolyte
What is an anode?
The anode is the area of the metal surface that corrodes. The metal oxidizes (gains
oxygen), causing it to lose mass and dissolve into the electrolyte.
What is oxidation?
Oxidation is a chemical reaction that occurs at the anode where the metal loses
electrons.
What is a cathode?
The cathode is the area of the metal surface that reduces (loses oxygen).
What is reduction?
Reduction is a chemical reaction that occurs at the cathode that involves the metal
gaining electrons.
What is the metallic pathway?
The metallic pathway connects the anode to the cathode and allows the passage of
electrons generated from the cathode to the anode.
What is an electrolyte?
, The electrolyte is the conductive medium (any solution, like water) in which ions are
carried from the anode to the cathode.
What is a barrier coating?
A barrier coating protects the substrate/metal by providing a chemical and physical
barrier between the metal surface and the environment.
The barrier coating interrupts the electrolyte of the electrochemical cell.
What is passivation?
Passivation is when a layer of oxides form on the surface of a metal that provides
corrosion protection.
What is the purpose of the electrolyte?
To allow the passage of ions from the anode to the cathode.
What is a sacrificial coating?
A sacrificial coating is a coating that contains a metal (usually zinc) that will corrode
instead of the metal substrate.
What is an inhibitive coating?
Inhibitive coatings act as aa barricade to slow down the reaction at the anode, or
cathode, or both. They contain special pigments that react with moisture or oxygen and
form a hard, non-reactive surface film that interferes with the corrosion process.
What are the 4 basic components of a coating?
Pigments
Binder/Resins
Solvents
Additives
What is are pigments?
Pigments are the solid particles that give specific protective, mechanical, or decorative
qualities to the coating.
In its unmixed form, pigments are powders.
What are binders/resins?
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