期刊
CORROSION SCIENCE
卷 72, 期 -, 页码 108-117出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2013.03.013
关键词
Carbon steel; Polarization; EIS; Acid corrosion; Acid inhibition
资金
- Woodside Energy Ltd.
- Australian Government
- Western Australian Government
- Western Australian Energy Research Alliance (WAERA)
- Curtin University
The adsorption of four CO2 corrosion inhibitors on silica sand and their subsequent inhibition activity at sand-deposited steel has been investigated. The presence of a sand deposit affects the performance of inhibitors at carbon steel due to their competitive adsorption on sand. Sulfur-containing organic compounds show minimal adsorption on sand compared to pyridinium surfactants and provide the highest inhibition efficiency at the sand-deposited steel. The extent of inhibitor adsorption onto sand is discussed in relation to their chemical structures. The significance of determining the adsorption affinity to sand in the selection of inhibitors to mitigate under-deposit corrosion is demonstrated. (C) 2013 Elsevier Ltd. All rights reserved.
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