Uhlig

H. H. Uhlig and R. W. Revie, Corrosion and Corrosion Controls ed., John Wiley Sons, Inc., New York, 1985. 

Figure 5.1 Effect of oxygen concentration on corrosion of mild steel in slowly moving water containing 165 ppm CaCl2 48-hour test, 25°C. [Courtesy of H. H. Uhlig, D. N. Triadis, and M. Stern, Effect of Oxygen, Chlorides, and Calcium Ion on Corrosion Inhibition of Iron by Polyphosphates, J. Electrochem. Soc. 102, p. 60 (1955). Reprinted with permission by The Electrochemical Society, Inc. ]...

Uhlig, H. H. (Ed.), The Corrosion Handbook, Wiley, New York and Chapman and Hall, London (1948) Uhlig, H. H, Corrosion and Corrosion Control, Wiley, New York (1971) Fontana, M. G. and Greene, N. D.. Corrosion Engineering, McGraw-Hill (1967)... 

Figure 1.3 la to c shows how an increase in the concentration of dissolved oxygen or an increase in velocity increases /Y and thereby increases. It has been shown in equation 1.73 that /Y increases with the concentration of oxygen and temperature, and with decrease in thickness of the diffusion layer, and similar considerations apply to. Thus Uhlig, Triadis and Stern found that the corrosion rate of mild steel in slowly moving water at... 

Uhlig, H. H., Corrosion and Corrosion Control, John Wiley, New York (1967)... 

Fig. 1.52 Mechanism of filiform corrosion showing how atmospheric oxygen and watCT enter the active head through the film (lacquer) and how water leaves through the inactive tail. This results in a high concentration of oxygen at the V -shaped interface between the tail and the head, and to a differential aeration cell (after Uhlig )...

Table 1.19 gives some critical pitting potentials collated by Uhlig for different metals in 0 -1 N NaCl at 25 °C, in which in most cases the potential was first increased incrementally and held constant at each potential for 5 min in order to obtain an approximate value of the critical pitting potential. This may be followed by a separate series of experiments in which fresh specimens are held at potentials close to b for 12 h or more and the surface... 

Uhlig et al. have established the following relationships between (V, V5. S.H.E.) flci for Fe-18Cr-8Ni stainless steeP ... 

Uhlig etal. have also determined the minimum activity of inhibiting oxy-anions fli b to inhibit the pitting of Fe-18Cr-8Ni stainless steel - and aluminium , and found that equations of the type... 

There is considerable metallographic and electrochemical evidence in support of each theory and it is of interest to note that two of the most authoritative works on corrosion appear to support opposite views — Uhlig favours the selective dissolution of zinc theory, whereas Fontana and Greene favour the dissolution-precipitation theory. 

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