L. Balazs, CORROSION FRONT ROUGHENING IN 2-DIMENSIONAL PITTING OF ALUMINUM THIN-LAYERS, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 54(2), 1996, pp. 1183-1189
A smooth to fractal transition of the corrosion front has been observe
d during two-dimensional pitting of Al thin films. The propagation of
the initially smooth front ceased spontaneously, leaving behind a self
-similar coastline with fractal dimension D-f = 1.33 +/- 0.01. The rou
ghening transition can be interpreted within the framework of the spre
ading bond percolation model with trapping. Quantitative agreement has
been found between model calculations and the dynamic exponents chara
cterizing the temporal behavior of the propagation velocity as well as
the roughness of the front.