期刊
CORROSION SCIENCE
卷 91, 期 -, 页码 108-119出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2014.11.007
关键词
Mild steel; EIS; XPS; Acid corrosion; Acid inhibition
资金
- National Natural Science Foundation of China [51471021]
Corrosion inhibition of a quinolinium quaternary ammonium salt and a Gemini surfactant, 1,3-bis(dodecyldimethylammonium chloride)-2-propanol, for mild steel in H2S and CO2 saturated brine solution was investigated by using polarization test, EIS and XPS. The synergistic effect is found between these two compounds when the Gemini concentration is less than 50 mg L-1 in the solution containing 100 mg L-1 quinolinium quaternary ammonium salt, and it disappears when the Gemini concentration is larger than 50 mg L-1. The synergistic mechanism is explained by competitive adsorption of these two compounds on steel surface. (C) 2014 Elsevier Ltd. All rights reserved.
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