Aster koraiensis as nontoxic corrosion inhibitor for mild steel in sulfuric acid

被引：114

作者：

Prabakaran, Mayakrishnan ^{[1
]}

Kim, Seung-Hyun ^{[1
]}

Mugila, Nithiyanandham ^{[2
]}

Hemapriya, Venkatesan ^{[2
]}

Parameswari, Kandasamy ^{[2
]}

Chitra, Subramanian ^{[2
]}

Chung, Ill-Min ^{[1
]}

机构：

[1] Konkuk Univ, Coll Life & Environm Sci, Dept Appl Biosci, Seoul 05029, South Korea

[2] PSGR Krishnammal Coll Women, Dept Chem, Coimbatore 641004, Tamil Nadu, India

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2017年 / 52卷

关键词：

Corrosion; Mild steel; Aster koraiensis; Electrochemical examination; SEM-EDX; LOW-CARBON STEEL; THERMODYNAMIC CHARACTERIZATION; ADSORPTION PROCESSES; METAL DISSOLUTION; NATURAL-PRODUCTS; EXTRACTS; POLYACETYLENE; PROTECTION; MECHANISM; CHLORIDE;

D O I：

10.1016/j.jiec.2017.03.052

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：235 / 242

页数：8

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