Corrosion inhibition of 2024-T3 aluminum alloy in 3.5% NaCl by thiosemicarbazone derivatives

被引：150

作者：

Prakashaiah, B. G. ^{[1
,2
]}

Kumara, D. Vinaya ^{[2
]}

Pandith, A. Anup ^{[3
]}

Shetty, A. Nityananda ^{[2
]}

Rani, B. E. Amitha ^{[1
]}

机构：

[1] Natl Aerosp Lab, CSIR, Surface Engn Div, Bangalore 560017, Karnataka, India

[2] Natl Inst Technol Karnataka, Dept Chem, Srinivasnagar 575025, Karnataka, India

[3] Kyungpook Natl Univ, Sch Appl Chem Engn, Dept Appl Chem, Daegu 41566, South Korea

来源：

CORROSION SCIENCE | 2018年 / 136卷

关键词：

Alloy; Aluminum; EIS; Polarization; ENVIRONMENTALLY BENIGN INHIBITOR; MILD-STEEL CORROSION; LOCALIZED CORROSION; ADSORPTION BEHAVIOR; AA2024-T3; PROTECTION; COATINGS; BENZOTRIAZOLE; DISSOLUTION; MECHANISM;

D O I：

10.1016/j.corsci.2018.03.021

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three thiosemicarzone derivatives, namely (E)-2-(2-hydroxybenzylidene) hydrazinecarbothioamide(MHC), (E)2-(2,4-dihydroxybenzylidene)hydrazinecarbothioamide (DHC) and (E)-2-(2,3,4-trihydroxybenzylidene)hydrazinecarbothioamide (THC) were synthesized and their corrosion inhibition action on 2024-T3 aluminum alloy was studied in 3.5% NaCl solution. The surface morphology and surface composition of the corroded alloy were examined using FESEM, 3D profilometry, EDX spectroscopy and X-ray photoelectron spectroscopy. The synthesized inhibitors were found to provide corrosion protection on AA2024-T3 by forming an adsorbed layer of the complex on the alloy surface. They exhibited inhibition efficiency in the order, MHC < DHC < THC. Quantum chemical calculations corroborated the experimental results.

引用

页码：326 / 338

页数：13

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