期刊
CORROSION SCIENCE
卷 118, 期 -, 页码 31-48出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2017.01.016
关键词
stainless steel; EIS; XPS; acid corrosion; passivity
资金
- National Natural Science Foundation of China [51601182]
- China Postdoctoral Science Foundation [2015M582139]
- Fundamental Research Funds for the Central Universities [201513050]
- National Environmental Corrosion Platform
Influence of temperature on the electrochemical and passivation behavior of 2507 super duplex stainless steel in the simulated desulfurized flue gas condensates in thermal power plant chimney are investigated. Cathodic reactions are enhanced with temperature, accompanying with the involvement of oxygen reduction when the temperature is raised to 60 C-omicron or higher. The unchanged semiconductor type, enrichment of Cr and thickening of the passive film are observed as the temperature increases. The temperature induced variations of film structure and doping concentrations are responsible for the degradation of protective ability of the passive film. (C) 2017 Elsevier Ltd. All rights reserved.
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