Corrosion inhibition of aluminium pigments in aqueous alkaline medium using plant extracts
Date
2012
Journal Title
Journal ISSN
Volume Title
Publisher
Canadian Center of Science and Education
Abstract
This work examines the efficacy and efficiency of Bucolzia coriacea (BC) and Cninodoscolus chayansa (CC) plants extracts as corrosion inhibitors for aluminum pigments using gas volumetric technique. The results obtained from this study indicate that all the extracts inhibited the corrosion process by extending the latency periods of the aluminum pigment-extract mix far beyond that of the bare aluminum pigment. Inhibition efficiency obtained was not only concentration dependent but also plant dependent and followed the order: BC>CC. A linear correlation was obtained between inhibition efficiency and duration of latency for each extract. Molecular modeling was used to evaluate the structure, electronic reactive parameters of the plant extracts in relation to their effectiveness as corrosion inhibitors.
Description
This article contains figures and tables
Keywords
Aluminium pigments, corrosion, inhibitors, alkaline medium, Department of Chemistry
Citation
Akalezi, C. O., Ogukwe, E. E., Enenebaku, C. K. & Oguzie, E. E. (2012 ). Corrosion inhibition of aluminium pigments in aqueous alkaline medium using plant extracts. Environment and Pollution, 1(2), 45 - 60