Corrosion Inhibition of Aluminum by Psidium Guajava']java Seeds in HCl Solution

被引：11

作者：

Sharma, Y. C. ^{[1
,2
]}

Sharma, S. ^{[3
]}

机构：

[1] Vivekananda Global Univ, Fac Basic & Appl Sci, Jaipur 303012, Rajasthan, India

[2] Vivekananda Global Univ, Res & Dev, Jaipur 303012, Rajasthan, India

[3] Univ Rajasthan, Dept Chem, Jaipur 302015, Rajasthan, India

来源：

PORTUGALIAE ELECTROCHIMICA ACTA | 2016年 / 34卷 / 06期

关键词：

Psidium gua[!text type='java']java[!/text; aluminum; corrosion; inhibitor; adsorption;

D O I：

10.4152/pea.201606365

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The corrosion inhibition and adsorption of ethanol extracts of Psidium guajava seeds (EEPgS), for aluminum in 0.5 N HCl solutions, were investigated using conventional weight loss, FTIR spectroscopy and SEM analysis techniques. The results showed that EEPgS performed well as inhibitor for the corrosion of aluminum in hydrochloric acid media. FTIR results showed that the inhibition mechanism was by adsorption process, through the functional groups present in the extract. Inhibition efficiency increased with increasing concentration of the plant extract, but decreased with the temperature rise. The weight loss data were fitted into a number of isotherms, though Langmuir model was found to be the best fit. The SEM photographs confirmed the protection offered by the extract on the surface of the metal.

引用

页码：365 / 382

页数：18

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