A Dialkyldithiophosphate Derivative as Mild Steel Corrosion Inhibitor in Sulfuric Acid Solution

被引：21

作者：

Su, Xiulan ^{[1
]}

Lai, Chuan ^{[1
,2
]}

Peng, Lincai ^{[1
]}

Zhu, Hui ^{[1
]}

Zhou, Lvshan ^{[1
]}

Zhang, Lei

Liu, Xingqin

Zhang, Wei ^{[1
]}

机构：

[1] Sichuan Univ Arts & Sci, Sch Chem & Chem Engn, Dazhou 635000, Peoples R China

[2] Sichuan Univ Sci & Engn, Mat Corros & Protect Key Lab Sichuan Prov, Zigong 643000, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2016年 / 11卷 / 06期

关键词：

Corrosion inhibitor; Mild steel; Sulfuric acid; O; '-dialkyldithiophosphate; CARBON-STEEL; HYDROCHLORIC-ACID; ADSORPTION; HCL; EXTRACT; BASES;

D O I：

10.20964/2016.06.45

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In the present work, N, N-Diethylammonium O,O'-di(4-chlorophenyl)dithiophosphate (Cl-EPP) acting as a mild steel corrosion inhibitor was synthesized. Potentiodynamic polarization measurements, weight loss measurements and scanning electron microscopy were used to evaluate the corrosion inhibition of Cl-EPP for mild steel in sulfuric acid. The results of electrochemical measurements indicate that the Cl-EPP is a mixed type inhibitor. Meanwhile, the inhibition efficiency increase with the increasing of concentration of inhibitor concentration, decrease with the increasing of temperature, sulfuric acid concentration and storage time. In addition, the adsorption of Cl-EPP on mild steel surface is chemical adsorption, and obeys Langmuir isotherm.

引用

页码：4828 / 4839

页数：12

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