ASSIGNMENT 4
Textbook Assignment:
“Corrosion Control.” Pages 4-1 through 4-58.
4-1.
What is the greatest threat to the structural
integrity of an aircraft?
1. Aircraft design
2. Aircraft weight
3. Metal corrosion
4. Metal composition
4-2.
Corrosion is detrimental to the integrity of
an aircraft. It alters the structure of the
materials that make up the aircraft in what
manner?
1.
Reduction in strength only
2.
Change in mechanical characteristics
only
3.
Reduction in strength and change in
mechanical characteristics
4-3.
4.
Decreases aerodynamic efficiency
The materials used in the construction of an
aircraft are chosen according to their
1. cost
2. availability
3. corrosion-resistant properties,
4. weight-to-strength ratio
4-4.
Metal corrosion is defined as the
deterioration of metal as it combines with
which of the following elements?
1. Nitrogen
2. Argon
3. Oxygen
4. Helium
4-5.
4-6.
4-7.
On naval aircraft, what materials are used
most often to separate susceptible alloys
from the corrosive environment?
1. Shrouds
2. Paints
3. Sealants
4. Preservatives
Which of the following is a description of
the flow of electrons during electrochemical
attack of a metal?
1.
Electrons flow from the anodic area to
the cathodic area, resulting in the
deterioration of the anodic area
2.
Electrons flow from the anodic area to
the cathodic area, resulting in the
deterioration of the cathodic area
3.
Electrons flow from the cathodic area
to the anodic area, resulting in the
deterioration of the cathodic area
4.
Electrons flow from the cathodic area
to the anodic area, resulting in the
deterioration of the anodic area
Which of the following conditions are
factors in the electrochemical reaction that
causes metals to corrode?
1.
Heat and humidity only
2.
Heat and moisture only
3.
Moisture and humidity only
4.
Heat, humidity, and moisture
21
