Journal
CORROSION SCIENCE
Volume 102, Issue -, Pages 259-268Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2015.10.014
Keywords
Carbon steel; Stainless steel; Erosion; Polarization; Passivity
Funding
- National Natural Science Foundation of China [51131008]
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The erosion-enhanced corrosion of 304 stainless steel and carbon steel under impingement by NaCl solution has been investigated. With increasing flow velocity, the open-circuit potential of carbon steel increases in the sand-free solution, while,decreases in the sand-containing solution. The passive current density of stainless steel under impingement is close to that in quiescent condition in most cases, while increases by an order of magnitude at a flow velocity higher than the critical flow velocity. An ideal schematic has been used to explain the electrochemical results. The passivation of stainless steel under impingement is further analyzed by potentiostatic polarization. (C) 2015 Elsevier Ltd. All rights reserved.
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