PS Magazine - TB 43-PS-712
PS, The Preventative Maintenance Monthly
ISSUE 712
MARCH 2012
x
PS 712
MAR 12
29
PS 712
MAR 12
Tactical Vehicles…
How can
we hope to
defeat
these
corrosion
creatures if we
can’t
identify
‘em!?
Connie,
we could
really
use a
hand here!
I’m sending
the corrosion
identities now.
GoOd!
now
we’ll know what
we’re fighting!
UNIFORM (or general attack):
Affects a large area of exposed metal surface, like rust on steel or tarnish on silver. It
gradually reduces the thickness of the metal until it fails.
9
Types of Corrosion
CREVICE:
Occurs in crevices created by rubber seals, gaskets, bolt heads, lap joints, dirt or other
surface deposits. It will develop anywhere moisture or other corrosive agents are
trapped and unable to drain or evaporate.
SELECTIVE LEACHING:
One element, usually the anodic element of an alloy, corrodes away, leaving the
cathodic element. This can create holes in metal.
INTERGRANULAR:
Metal deterioration caused by corrosion of the bonds between or across the grain
boundaries of a metal. The metal will appear to be peeling off in sheets, Faking, or
being pushed apart by layers. A particular type of intergranular corrosion is exfoliation.
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4:53 PM
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