LO block 4 test With Correct Actual Questions And Correctly Well Defined Answers.
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Course
BLOK
Institution
BLOK
corrosion - correct answer deterioration of the metal by chemical or electrochemical reaction to its environment
atom - correct answer smallest unit of an element
ions - correct answer ...
stress cracking - correct answer dangerous because the part could fail under a
normal load
Uniform surface corrosion - correct answer first seen as dulling of the surface. if
unnoticed the surface can become rough and possibly frosted in appearance.
pitting - correct answer progression of uniform surface. aluminum=white
magnesium= gray. when cleaned tiny pits are revealed
galvanic - correct answer difference in metal composition. buildup of corrosion at
the joint between metals. EXAMPLE - around rivets and fasteners
intergranular - correct answer difference in metal composition between the grain
boundary and center part of grain. hard to detect because it is beneath the surface
exfoliation - correct answer advanced stage of intergranular corrosion. grains are
separated from each other
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