期刊
CORROSION SCIENCE
卷 52, 期 7, 页码 2422-2429出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2010.03.021
关键词
Iron; Polyacrylic acid; Iodide ion; Acid corrosion; Adsorption
资金
- Chinese Academy of Sciences (CAS)
- Academy of Sciences for the Developing World (TWAS)
Corrosion inhibition of iron in H2SO4 by polyacrylic acid (PM) was investigated using electrochemical techniques at 30 degrees C. Results obtained indicate that PAA inhibited the corrosion of iron in the acid medium. Inhibition efficiency increases with increase in PAA concentration and synergistically enhanced on addition of iodide ions. Potentiodynamic polarization results suggest that PM functions as a modest cathodic inhibitor. The adsorption of PAA onto the iron surface followed Temkin adsorption isotherm. FTIR analysis revealed that the synergistic effect due to co-adsorption of iodide ions and PM is co-operative in nature. (C) 2010 Published by Elsevier Ltd.
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