SYMPOSIA PAPER Published: 01 January 1981
STP28041S

Electrochemical Behavior of Carbon Steel in Fused Salts

Source

The polarization resistance method was used to assess the corrosion rate and to study the oxidation kinetics of carbon steel in a fused nitrate-sulfate-chloride salt mixture at 316°C (600°F) and in an alkali iron trisulfate salt at 677°C (1250°F). The same method was also applied to estimate the corrosion rate of carbon steel through the solidified frozen alkali iron trisulfate salt.

Equilibrium potential/pO2− diagrams were constructed for iron, nitrate, and nitrate-reaction products to aid in the interpretation of corrosion data for the nitrate-rich salt and to determine the various chemical reactions causing the corrosion.

Author Information

Chen, CM
Babcock & Wilcox, Alliance, Ohio
Theus, GJ
Babcock & Wilcox, Alliance, Ohio
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Details
Developed by Committee: G01
Pages: 303–326
DOI: 10.1520/STP28041S
ISBN-EB: 978-0-8031-4795-9
ISBN-13: 978-0-8031-0704-5