Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 220, Issue -, Pages 63-70Publisher
ELSEVIER
DOI: 10.1016/j.molliq.2016.04.053
Keywords
Q235 steel; Ionic liquid; Acid corrosion; XPS; Passive film
Funding
- National Natural Science Foundation of China [21576211]
- Tianjin Research Program of Application Foundation and Advanced Technology [13JCYBJC41600]
- Opening Project Foundation of State Key Laboratory of Separation Membranes and Membrane Processes/Tianjin Polytechnic University [M2-201510]
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Bronsted acid ionic liquid (BAIL) 3-methyl-1-(4-sulfonic acid) butyl imidazolium bisulfate, a promising acid catalyst instead of conventional acid, was investigated with respect to the corrosion ability to Q235 steel. A wide passive range could be observed by electrochemical tests even when increasing temperature or diluting IL with water. The corrosion morphology and elemental compositions of the corroded surface were studied by SEM-EDX, XPS depth profiling and its possible electrochemical passivation mechanism was proposed. (C) 2016 Elsevier B.V. All rights reserved.
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