Evaluation of corrosion inhibition by cerium on aluminium under marine and laboratory environments
Evaluation of corrosion inhibition by cerium on aluminium under marine and laboratory environments
Date
2004
Authors
Ashraf, M.P.
Edwin, L.
Journal Title
Journal ISSN
Volume Title
Publisher
NISCAIR
Abstract
Cerium is considered to be a promising ecological alternative to toxic chromates in the field of corrosion protection. Studies were conducted to evaluate the corrosion inhibition by cerium on aluminium under marine and laboratory environ ments. The results revealed that under marine environment 1000 ppm Ce treated pure aluminium showed good corrosion in hibition than the Al-Mg alloy M57S. The corrosion rate was significantly high during post monsoon and summer season and cerium treated on pure aluminium showed superior corrosion inhibition in all the seasons. Cerium treated pure aluminium showed better corrosion inhibition as compared to untreated marine grade M57S aluminium. The laboratory evaluation of
1000 ppm cerium treatment on aluminium and its exposure in solutions of different salinity (5 to 200 ppt) revealed 30-66 and 0-92.6% efficient corrosion inhibition in pure and M57S aluminium respectively.
Description
Keywords
Cerium, corrosion inhibition, marine corrosion, aluminium corrosion
Citation
Indian Journal of Chemical Technology 2004: 11, 672-677