Neha Parekh

H uma tend ncia crescente para utilizar compostos de extractos de plantas como inibidores da corros o. A inibi o da corros o do alum nio em cido clor drico (HCl) por extracto de sementes de Rosa, Cal ndula e Mostarda tem sido estudada utilizando a t cnica de medi o da perda de peso a 35oC. A caracteriza o do extracto verde foi levada a cabo utilizando a t cnica FT-IR. Os resultados confirmaram que o extracto de sementes de Rosa, Cal ndula e Mostarda inibiu a corros o induzida pelo cido do Alum nio. A efic cia da inibi o aumenta com o aumento da concentra o do extracto.

C' una tendenza crescente a utilizzare i composti degli estratti vegetali come inibitori di corrosione. L'inibizione della corrosione dell'alluminio in acido cloridrico (HCl) da parte di estratti di semi di rosa, calendula e senape stata studiata utilizzando la tecnica di misurazione della perdita di peso a 35oC. La caratterizzazione dell'estratto verde stata effettuata utilizzando la tecnica FT-IR. I risultati hanno confermato che l'estratto di semi di rosa, calendula e senape ha inibito la corrosione indotta dall'acido dell'alluminio. L'efficienza di inibizione aumenta con l'aumentare della concentrazione dell'estratto.

Es gibt einen wachsenden Trend zur Verwendung von Pflanzenextrakten als Korrosionsschutzmittel. Die Korrosionshemmung von Aluminium in Salzs ure (HCl) durch Extrakte aus Rosen-, Ringelblumen- und Senfsamen wurde mit der Technik der Gewichtsverlustmessung bei 35 C untersucht. Die Charakterisierung des gr nen Extrakts wurde mit der FT-IR-Technik durchgef hrt. Die Ergebnisse best tigen, dass der Extrakt aus Rosen-, Ringelblumen- und Senfsamen die s ureinduzierte Korrosion von Aluminium hemmt. Die Hemmwirkung steigt mit zunehmender Konzentration des Extrakts.

Il existe une tendance croissante utiliser des extraits de plantes comme inhibiteurs de corrosion. L'inhibition de la corrosion de l'aluminium dans l'acide chlorhydrique (HCl) par des extraits de graines de rose, de souci et de moutarde a t tudi e en utilisant la technique de mesure de la perte de poids 35oC. La caract risation de l'extrait vert a t effectu e en utilisant la technique FT-IR. Les r sultats ont confirm que l'extrait de graines de rose, de souci et de moutarde inhibe la corrosion de l'aluminium induite par l'acide. L'efficacit de l'inhibition augmente avec l'augmentation de la concentration de l'extrait.

It is a matter of great pleasure for me to present this book for researchers, academicians, and students related to corrosion inhibition study. Each chapter in this book gives you the idea to systematize your plan of action to study and use a corrosion inhibitor for the corrosion inhibition of metal. Various techniques used to study corrosion inhibition are explained in detail. Techniques used are weight loss, polarization, electrochemical impedance spectroscopy, and DFT study. I hope that my effort will cater to the needs of corrosion inhibitor scientists and they will enjoy the topics covered in this book. I would feel rewarded if they will achieve their goal with the help of this book. All attempts have been made to make it free of errors. In the last constructive criticism and valuable suggestion from the readers are most welcome to make their effort more useful.

There is a growing trend to utilize plant extracts compounds as corrosion inhibitor. Corrosion Inhibition of Mild Steel in 2M Hydrochloric acid (HCl) by leaves extract of Hibiscus rosa sinensis has been studied using weight loss measurement and spectrophotometry technique at 35oC. Characterization of Hibiscus rosa sinensis leaves extract was carried out using GC-MS technique. Results confirmed that the leaves extract of Hibiscus rosa sinensis inhibited the acid induced corrosion of Mild Steel (MS). The inhibition efficiency increases with increases in concentration of the extract. Inhibitive effect was afforded by adsorption of the extracts' components which was approximated by Freundlich adsorption isotherm, Langmuir adsorption isotherm and Temkin adsorption isotherm.