Journal Article Effect of chloride and sulfate ions in simulated boiler water on pitting corrosion behavior of 13Cr steel

Niu, Li-Bin  ,  Nakada, Kensuke

96pp.171 - 177 , 2015-06 , PERGAMON-ELSEVIER SCIENCE LTD
NCID:AA0061968X
Description
The pitting corrosion behavior of 13Cr steel was investigated in simulated boiler waters containing chloride ions (Cl-) and sulfate ions (SO42-) using potentiodynamic and potentiostatic polarization tests in addition to pit morphology analysis. The presence of 100 ppm cl(-) in the water caused pitting corrosion of the steel. Pit initiation was inhibited by the addition of 50 ppm or 100 ppm SO42- into the water containing 100 ppm Cl-. Pit growth was also suppressed by the presence of 50 ppm SO42- in the water with 100 ppm Cl-; however, it was conversely promoted in the presence of 100 ppm SO42-. (C) 2015 Elsevier Ltd. All rights reserved.
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