Research Article

Corrosion Inhibiting Mechanism of Nitrite Ion on the Passivation of Carbon Steel and Ductile Cast Iron for Nuclear Power Plants

Figure 10

Elemental distribution analyzed by EPMA on the surface of ductile cast iron passivated in simulated cooling water (100,000 ppm NaNO2) at 25°C for 72 hours; (a) SEM image, (b) Fe, (c) C, (d) O, and (e) N.
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