The corrosion rates of type 1010 carbon steel, and types 304 and 316 stainless steels in saturated solutions under salt deposits were measured using coupled multielectrode sensors. The measurements were carried out in the presence of the following salts: KCl, NaCl, NaNO3, MgCl2, NiCl2, FeCl3, FeCl2, CuCl2, and an NaCl+NaNO3 mixture.

The results indicate that the corrosiveness of the salts increased in the following order:
for carbon steel, and
for type 304 stainless steel.

Some inhibition of corrosion of type 316 stainless steel by NaNO3 was observed in a mixture of NaCl+NaNO3, but not in pure NaNO3 solution.

Subject
Sensors, Salts, Corrosion currents, Corrosion rate, Sodium chloride, Density, Sodium chloride solution, Anodic current, Potassium chloride, Carbon steel, Deposit corrosion, Stainless steel, Electrodes
Keywords:
galvanically coupled sensor, multiple-electrode sensor, multielectrode, wire beam electrode, localized corrosion, salt deposit corrosion, under salt corrosion
Government work published by the Association for Materials Protection and Performance (AMPP) with permission of the author(s). Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2003
GOV
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