TM 55-2835-208-23
GLOSSARY
Section 2.
DEFINITIONS
TERM
DEFINITION
B
Bend
Distortion in a part .
Binding
Break
Burnishing
Burr
C
Chipping
Contamination
(Foreign Material)
Corrosion (Direct
Surface Attack)
Corrosion (Galvanic)
T o c o n f i n e a n d r e s t r i c t t h e l i b e r t y o f a f r e e m o v i ng
part, material or component. May cause serious damage
if a chafing force is being imposed.
Separation of a part .
Smoothing minor damage using a hand tool.
A r o u g h o r s h a r p e d g e o n a h o l e o r c o r n e r , u s u a l ly
caused by machining, sometimes by wearing.
Breaking away of metallic particles.
Any foreign substance such as metal chips, lint, rust
and water that would be harmful to the functioning of
a part or system.
A type of corrosion that results from direct reaction
between a metal surface and the atmosphere.
Rust on
iron is a common example.
A c c e l e r a t e d c o r r o s i o n a s a r e s u l t o f e l e c t r i c a l c o n-
tact between dissimilar metals .
Corrosion (Intergranular) A corrosion type which attacks along the grain bound-
aries of a metal.
Corrosion (Pitting)
Formation of
s m a l l c a v i t i e s o n
a m e t a l l i c
s u r f a ce
caused by chemical or physical nonhomogeneities.
Corrosion (Stress
A type of corrosion which causes cracking and part
Cracking)
f a i l u r e d u e t o a c o m b i n a t i o n o f c o r r o s i o n a n d s u s -
t a i n e d t e n s i l e s t r e s s.
Crack
Parting of parent metal.
GLOSSARY 2
