期刊
CORROSION SCIENCE
卷 80, 期 -, 页码 111-119出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2013.11.015
关键词
Carbon steel; Stainless steel; Iron; Polarization; Pitting corrosion; Passivity
资金
- National Natural Science Foundation of China [51171014, 51210001]
- Fundamental Research Funds for the Central Universities [ZZ1116]
The metastable pitting potential for four materials, Q235 steel, X70 steel, pure iron and 316L stainless steel in chloride solutions were measured by slow scan potentiodynamic polarization. For the four materials, good linear relationship exists between the metastable pitting potential E-m, and pitting potential E-b. The close relationship between the two parameters is attributed to the passivity of the metals in environments, which plays the key role in both the nucleation processes of metastable pitting and stable pitting. Higher passivity results in higher average pitting potential and larger difference between average E-b and E-m, values. (C) 2013 Elsevier Ltd. All rights reserved.
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