期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 52, 期 -, 页码 235-242出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2017.03.052
关键词
Corrosion; Mild steel; Aster koraiensis; Electrochemical examination; SEM-EDX
资金
- Konkuk University
Inhibition efficiency of Aster koraiensis leaf extract toward corrosion of mild steel in 1 M H2SO4 solution was investigated using weight loss, electrochemical, FT-IR, SEM, and EDX methods The individual phenolic compounds present in A. koraiensis extract were identified. Maximum efficiency of 90.53% was achieved at 2000 ppm of the extract. The corrosion kinetic parameters determined from the polarization curves indicated that the extract acted as a mixed-type inhibitor. Adsorption of the inhibitor on the mild steel surface obeyed the Langmuir isotherm. SEM investigations confirmed the formation of inhibition layer unto the metal surface by compounds present in the extract. (C) 2017 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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