1. Anode The negatively charged electrode of an electrochemical cell
where oxidation occurs. Electrons flow away from the Anode
2. Cathode The positively charged electrode of an electrochemical cell
where reduction is the principal reaction. Electrons flow to-
wards the cathode in the external circuit.
3. Cathodic Protection A technique to reduce the corrosion of a metal surface by
making that surface the cathode of an electrochemical cell.
4. Corrosion The deterioration of a material, usually a metal, that results
from a reaction with its environment.
5. Crevice Corrosion Localized corrosion of a metal surface at, or immediately
adjacent to, an area that is shielded from full exposure to the
environment because of close proximity of the metal to the
surface of another material.
6. Electrolyte A chemical substance containing ions that migrate in an
electric field.
7. Galvanic Corrosion The electrochemical action of two dissimilar metals in contact
in the presence of an electrolyte, and an electron conductive
path.
8. Generalized Corrosion Corrosion that is disturbed more or less uniformly over the
surface of a material.
9. Localized Corrosion Corrosion that occurs at discrete sites on the metal surface.
10. Return Path (Metallic Pathway) Path that connects the anode and cathode, allowing passage
of electrons, generated at the anode, to the cathode.
11. A. Iron (Fe)
, CIP Level 2
The principal component of
mild carbon steel is ________.
A. Iron (Fe)
B. Carbon (C)
C. Chromium (Cr)
D. Silicon (Si)
12. The formation of a thin surface D. Passivation
layer on metals, whether an ox-
ide, carbonate, or other com-
pound, that slows the rate of
corrosion process is called?
A. Electro-osmosis
B. Electro-deposition
C. Faying surface
D. Passivation
13. Which is the part of the cor- A. Anode
rosion cell where metal dis-
solves?
A. Anode
B. Cathode
C. Ionic pathway
D. Electrolyte
14. Which of these elements is like- A. Salts
ly to accelerate corrosion on a C. High temperatures
steel structure? (Select all that D. Pollutants
apply)
, CIP Level 2
A. Salts
B. Low temperatures
C. High temperatures
D. Pollutants
15. In a cathodic protection sys- B. Cathode
tem, the metal being protected
is the _______?
A. Anode
B. Cathode
C. Ground bed
D. Rectifier
16. When parts of a metal surface D. Crevice corrosion
are shielded from full exposure
to the environment because of
the close proximity of another
metal, corrosion at that loca-
tion is identified as _______?
A. Fretting corrosion
B. Cavitation-erosion corro-
sion
C. Pitting corrosion
D. Crevice corrosion
17. Cathodic protection using im- C. Pipelines
pressed current is most com-
monly used on ______?
A. Off-shore drilling platforms
B. High voltage transmission
, CIP Level 2
towers
C. Pipelines
D. Trucks
18. Impressed current ground bed A. Graphite
anodes are likely to include C. High silicon cast iron
________? (Select all that apply)
A. Graphite
B. Zinc
C. High silicon cast iron
D. Aluminum
19. ADsorbent Desiccants Desiccants in their LIQUID form are called "ADsorbent desic-
cants". This includes common sulfuric acid (used in chemi-
cal manufacturing), lithium chloride, or polymeric materials,
such as triethylene glycol.
20. ABsorbent Desiccants Desiccants in their SOLD form are called "ABsorbent desic-
cants". Moisture is adsorbed onto the surface of a granular
material, such as silico gel, which is capable of holding large
quantities of moisture.
21. Boundry Layer The layer of air immediately adjacent to the steel surface.
22. Desiccant(s) Substances that naturally have a high affinity for water. They
draw moisture directly from the surrounding environment.
23. You are a coating inspector D. It can no longer absorb moisture
on a project with dehumidifi-
cation provided by a rotating
bed type dehumidifier. The sili-
ca gel has become contaminat-