Journal
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
Volume 30, Issue 3, Pages 253-258Publisher
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/j.jmst.2013.07.010
Keywords
316L stainless steel; Passive film; Pitting corrosion
Funding
- National Natural Science Foundation of China [50971050, 50771038]
- Ministry of Science and Technology of China [2012FY113000]
- Fundamental Research Founds for the Central Universities [HEUCF101005]
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The corrosion behavior of 316L stainless steel (316L SS) has been investigated in solutions containing various concentrations of chloride ions by using potentiodynamic polarization, capacitance measurement and Mott-Schottky relationship analysis (M-S). The result indicates that passive currents change slightly with the addition of chloride ions. The pitting potential (E-pit) decreases linearly with log[Cl-]. Correspondingly, the point defect diffusion coefficient (D-o) of the passive film increases linearly with increasing log[Cl-]. The results also indicate that the pitting corrosion of 316L SS follows the adsorption mechanism in NaCl solution.
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