corrosion
what type of corrosion is the result of two dissimilar metals?
a. uniform
b. intergranular
c. galvanic
c. Galvanic
what type of corrosion produces flaking or delamination from improper heating ?
a. intergranular
b. exfoliation
c. filiform
d. freting
b. exfoliation
to inhibit electrochemical corrosion , remove this?
a. fasteners
b. electrolyte
c. pitting
b. electrolyte
corrosion is the result of what?
a. rust forming on crystalized salt deposits
b. the tendency of a metal to return to its natural state
c. when a metal is subjected to electrical stress
b. the tendency of a metal to return to its natural state
when an anodic metal is intended to dissolve to protect a more cathodic metal?
a. active ion corrosion
b. sacrificial corrosion
c. rapid galvanic corrosion
b. sacrificial corrosion
what is the electrolytic chemical treatment for aluminum alloys?
a. anodizing
b. alodizing
a. anodizing
which of the following metals is the most cathodic metals listed below?
a. zinc
b. gold
c. lead
b. gold
what is the name of the non- electrolytic chemical treatment for aluminum alloys?
a. alodizing
b. anodizing
a. alodizing
corrosion can visibly appear as?
a. cathodic salts
b. electrostatic discharge
c. white powder deposits
white powder deposits
what are two forms so sacrificial corrosion?
a. cathodic metals with galvanized screws
b. steel tin
c. cadmium and zinc
d. aluminum and platinum
c. cadmium and zinc
chemical treatments increase the thickness of what ?
a. the oxide film layer
b. the concentration of negative ions
c. the voltage potential of the electrolyte
d. uniform
a. the oxide film layer
which of the following is not a surface corrosion?
a. oxidation
b. galvanic
c. uniform
d. pitting
b. galvanic
what type of corrosion forms from direct exposure to fumes and gases?
a. Uniform
b. stress
c. exfoliation
d. schematic
a. uniform
which of the following metals is the most cathodic?
a. nickel
b. aluminum
c. platinum
d. platinum
what causes hydrogen embrittlement?
a. mercury
b. rapid galvanic corrosion
c. improper cleaning agents
c. improper cleaning agents
controls cables are checked for corrosion how?
a. wrapped up in bundles
b. closed up to see the most are exposed
c. they are unwound, opened to see the inside
c. they are unwound, opened to see the inside
what type of corrosion forms from a difference in environment on single piece of metal?
a. filiform
b. concentration
c. oxidation
d. intergranular
b. concentration
what type of corrosion forms due to a chemical reaction with oxygen?
a. pitting
b. oxidation
c. galvanic
b. Oxidation
which of the following metals is the most anodic listed below?
a. gold
b. silver
c. tin
c. tin
which of the following of the areas will almost always have corrosion on an aircraft?
a. battery compartments
b. engine inlet
c. wheel wells
d. lavatory
d. lavatory
the "protected end" of the electrochemical series is also known as?
a. anodic, least noble
b. cathodic, most noble
c. mathodic, highly noble
b. cathodic, most noble
corrosion can be prevented by removing which of the following ?
a. Anode
b. Cathode
c. Electrolyte
d. All of the Above
d. All of the Above
which of the following is a corrosion prone area?
a. Battery compartments
b. exhaust areas
c. wheel wells
d. all of the above
d. all of the above
which of the following metals is the most anodic metals listed below?
a. chromium
b. aluminum
c. platinum
d. silver
b. aluminum
what is the use of non-approved cleaning products on a metal?
a. amalgamation
b. rapid galvanic corrosion
c. hydrogen embrittlement
d. epoxy inhabitation
c. hydrogen embrittlement