Some Pyrimidine Derivatives as Corrosion Inhibitor for Mild Steel in Hydrochloric Acid

被引：50
|
作者：
Ansari, K. R. [1 ]
Sudheer [1 ]
Singh, Ambrish [2 ]
Quraishi, M. A. [1 ]
机构：
[1] Banaras Hindu Univ, Indian Inst Technol, Dept Chem, Varanasi 221005, Uttar Pradesh, India
[2] Lovely Profess Univ, Lovely Fac Technol & Sci, Dept Chem, Phagwara, India
来源：
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY | 2015年 / 36卷 / 07期
关键词：
Adsorption; corrosion; mild steel; surfaces; TRIAZOLE DERIVATIVES; ADSORPTION; IRON; HCL;
D O I：
10.1080/01932691.2014.938349
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The inhibition effect of four pyrimidine derivatives (PPDs) on the corrosion of mild steel in hydrochloric acid medium has been investigated using gravimetric measurements, electrochemical impedance spectroscopy, potentiodynamic polarization, and energy dispersive x-ray spectroscopy (EDX) techniques. Electrochemical impedance spectroscopy (EIS) data showed that the addition of PPDs increases the charge-transfer resistance (R-ct) and decreases the double-layer capacitance (C-dl). Potentiodynamic polarization revealed that PPDs acted as mixed-type inhibitors but are predominantly cathodic. The adsorption of studied compounds obeyed the Langmuir's adsorption isotherm. EDX and quantum chemical calculations support the experimental results.
引用
收藏
页码：908 / 917
页数：10
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