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Corrosion of Duplex Stainless Steel Alloy 2209 in Acidic and Neutral Chloride Solutions and its Passivation by Ruthenium as an Alloying Element

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Figure

Figure 1. The relation between dissolution rate (Δm) and time for DSS 2209 alloy containing (1) 0.0% Ru and (2) 0.3% Ru in (a) 2 M HCl and (b) 0.6 M NaCl solutions, respectively
Figure 2.  The change of corrosion rate (KCorr) as a function of time for DSS 2209 alloy containing (1) 0.0% Ru and (2) 0.3% Ru in (a) 2 M HCl and (b) 0.6 M NaCl solutions, respectively
Figure 3.  Change of the PE% as a function of time for DSS alloy by 0.3% Ru in (a) 2M HCl and (b) 0.6 M NaCl solutions, respectively
Table 1. Parameters obtained from CPP curves shown in Fig. 4for the DSS alloys in 2M HCl and 0.6 M NaCl solutions
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