1/3/2004
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X
-
fraction of width where
current
flows
in disordered phase
r
-
nucleation rate
t
d
-
channel formation time
Model of
Phase Transformation
0<t<t
d
l
a
Determines growth pattern of
current penetration
front.
l
l
l
*
a>0
z
Controlled growth
*
*
*
a< 0
z
Dendritic growth
*