Selective dissolution atomic arrangements

Actually, even the sophisticated studies combining electrochemistry and surface analysis seem unable to yield any further decisive information on the detailed mechanism of selective dissolution. Atomic arrangements in which dissolution of atoms A can proceed throughout a rough electrode structure enriched in B t) e have been recognized as amenable to percolation theory [193]. The same theory was also applied to the passivation of binary Fe-Cr alloys in which, as suggested in Ref 105, 106, passivation of the more soluble element, Fe, is enhanced by a coimected surface lattice of passive Cr atoms. The main power of percolation theory is to provide diagnostic criteria for computer simulations in terms of concentration thresholds. 

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