Inhibition of mild steel corrosion by some macrocyclic compounds in hot and concentrated hydrochloric acid

被引：164

作者：

Quraishi, MA ^{[1
]}

Rawat, J ^{[1
]}

机构：

[1] Aligarh Muslim Univ, Fac Engn & Technol, Dept Appl Chem, Corros Res Lab, Aligarh 202002, Uttar Pradesh, India

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2002年 / 73卷 / 2-3期

关键词：

mild steel; acid corrosion; synergism; potentiodynamic polarization; macrocyclics; adsorption;

D O I：

10.1016/S0254-0584(01)00374-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three macrocyclic compounds, namely 2,3.9,10-tetramethyl-6,13-dithia-1,4,5,7,8,11,12,14-octaaza-cyclotetradeca-1,3,6,8,10,13-hexaene (MTAT), 3,4,9,10-tetramethyl-7,12-dithia-1,2,5,6,8,11-hexaazacyclododecane-2,4,7,8,10,12-hexaene (MTAD), 3,4,9,10-tetramethyl-7,12-dioxa- 1,2,5,6,8,11-hexaazacyclododecane-2,4,7,8,10,12-hexaene (MOAD) were synthesized to study their corrosion inhibitive effect in 5 N HCl by weight loss and potentiodynamic polarization studies. Inhibition efficiencies (IE) and corrosion rates (CR) of these compounds have been evaluated at three different temperatures ranging from 25 to 70degreesC. Enhancement in IE of these compounds was observed on addition of potassium iodide (KI) due to synergism. Potentiodynamic polarization studies showed that MTAT is mixed in nature. Adsorption studies have shown that all of these compounds inhibit corrosion of mild steel in 5 N HCl by adsorption mechanism. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：118 / 122

页数：5

共 22 条

[1]

Agarwala V.S., 1984, P INT C MET CORR, V1, P380

[2] Corrosion inhibiting properties of some polyaza macrocyclic compounds on mild steel in acid environments [J].