Inhibition of Mild Steel Corrosion in Hydrochloric and Sulfuric Acid Media Using a Thiosemicarbazone Derivative

被引：121

作者：

Mourya, Punita ^{[1
]}

Banerjee, Sitashree ^{[1
]}

Rastogi, Rashmi Bala ^{[1
]}

Singh, Madan Mohan ^{[1
]}

机构：

[1] Banaras Hindu Univ, Indian Inst Technol, Dept Appl Chem, Varanasi 221005, Uttar Pradesh, India

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2013年 / 52卷 / 36期

关键词：

LOW-CARBON STEEL; COLD-ROLLED STEEL; SCHIFF-BASES; ELECTROCHEMICAL IMPEDANCE; SYNERGISTIC INHIBITION; COPPER CORROSION; WEIGHT-LOSS; ADSORPTION; TEMPERATURE; ALLOY;

D O I：

10.1021/ie4012497

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The inhibitive effect of 4-(N,N-dimethylamino)benzaldehyde thiosemicarbazone (DMABT) on the corrosion of mild steel (MS) in 1 N HCl and 1 N H2SO4 solutions was investigated by weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopic measurements. It is inferred on the basis of the obtained results that DMABT is a mixed-type inhibitor, predominantly retarding cathodic reaction in both acidic media through adsorption on a MS surface. Adsorption obeys Langmuir's adsorption isotherm in both acidic media. The observations regarding energy-dispersive X-ray, scanning electron microscopy, and atomic force microscopy confirm the existence of a protective film of the inhibitor on a MS surface. The molecular adsorption of DMABT was ascertained by density functional theory data.

引用

页码：12733 / 12747

页数：15

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