The inhibitive effect of para-amino benzoic acid and its polymer on corrosion of iron in 1 mol/L HCl solution

被引：0

作者：

Manivel, P. ^{[1
]}

Venkatachari, G.

机构：

[1] AC Coll Engn & Technol, Karaikkudi 630004, Tamil Nadu, India

[2] Cent Electrochem Res Inst, Karaikkudi 630003, Tamil Nadu, India

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2006年 / 22卷 / 03期

关键词：

p-aminobenzoic acid; poly p-aminobenzoic acid; HCl; inhibition; corrosion;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Poly p-aminobenzoic acid has been synthesized by chemical oxidation method. The inhibitive effect of poly p-aminobenzoic acid on iron in 1 mol/L HCl solution was investigated by polarization and electrochemical impedance spectroscopy and compared with that of monomer p-aminobenzoic acid. The effectiveness of poly p-aminobenzoic acid is very high in comparison with that of monomer. The results show that both cathodic and anodic processes were suppressed by p-aminobenzoic acid and poly p-aminobenzoic acid of iron dissolution in 1 mol/L HCl by their adsorption on the iron surface. The inhibition efficiency of both p-aminobenzoic acid and poly p-aminobenzoic acid were found to increase with the inhibitor concentrations. Ultraviolet (UV) reflectance studies of the iron surface after exposure to inhibitor acid show that poly p-aminobenzoic acid is strongly adsorbed on iron surface.

引用

页码：301 / 305

页数：5

共 18 条

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