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

<div>Corrosion and inhibition steps with nitrite addition of ductile cast iron; (a) without corrosion inhibitor, (b) with insufficient corrosion inhibitor (10,000 ppm NaNO<sub>2</sub>), and with sufficient corrosion inhibitor (100,000 ppm NaNO<sub>2</sub>) (G; graphite, red line; metallic oxide, dot line; nitrogen compound).</div>

Advances in Materials Science and Engineering

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Figure 15

Figure 15: Corrosion Inhibiting Mechanism of Nitrite Ion on the Passivation of Carbon Steel and Ductile Cast Iron for Nuclear Power Plants 