Bockris-Drazic—Despic mechanism

Iron is the most intensively investigated system. The so-called Bockris mechanism (Bockris, Drazic, Despic > ) consists of the following steps ... 

Figure 32. Theoretical initial (—) and steady state (—) polarization curves, for the same mechanism as in Fig. 31, calculated for the ratios between the electrochemical rate constants approaching the limiting case in at the corrosion potential and fitting the Bockris-Drazic-Despic set of data. Approximate theoretical characteristics at the corrosion potential, = (RmF) In [(C,C, aH )/(Z4, )l, A /ApH = -59 mV, v S - = -0.50 in the linear region at moder e polarization,...

These kinetic results agree with the facts for 0 < pH < 4 which, together with the mechanism, were first published by Bockris, Drazic, and Despic (1961). 

J. O M. Bockris, D. Drazic, and A. Despic, Electrochim Acta 4 325 (1961). First determination of the cathodic Fe2+ deposition current by significantly accurate measurements of the co-evolved H2 mechanism of the corrosion of iron in acid solution. 

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