PS Magazine - TB 43-PS-712
PS, The Preventative Maintenance Monthly
ISSUE 712
MARCH 2012
30
PS 712
MAR 12
EROSION:
Results when a moving fuid (or gas) fows across a metal, particularly when solid
particles are present in the fuid. Corrosion actually occurs on the surFace oF the metal,
but the moving fuid washes away the corrosion and exposes a new metal surFace,
which also corrodes.
GALVANIC:
Occurs when two diFFerent kinds oF metal come in contact with each other, like steel
bolts on aluminum, For example. This is a common problem on aircraFt because oF
their mix oF metals.
PITTING:
This can result From conditions similar to those For crevice corrosion. Pits can develop
on various materials due to their composition. Rife bores are big victims oF pitting.
FRETTING:
Occurs between two pieces oF weight-bearing metal in contact with each other. It’s
usually identi±ed by a black powder corrosion product or pits on the surFace.
STRESS:
Term used to describe corrosion
cracking and corrosion Fatigue.
Reach for Rust Inhibitor
rain, salt, wind and sand are some
of the causes of corrosion.
but you can curb their
effects and lower repair
costs by using
rust inhibitor,
also known as corrosion
preventive compound.
every 8 months, just wipe
or spray the inhibitor on
the inside and underneath
your vehicles.
it also lubes
moving parts
and penetrates
existing rust.
that’ll slow the spread of new
rust and clean up old rust.
The inhibitor gets rid of
moisture that holds salt,
dirt and other pollutants
that eat up metal.
712 30-31.indd
1-2
2/3/12
4:06 PM
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