Effect of Cerium Ions on the Corrosion of Galvanised Steel in 0.5 M Na 2 SO 3 Solution

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dc.contributor.authorNeupane, Dharmendra
dc.date.accessioned2023-02-03T04:43:36Z
dc.date.available2023-02-03T04:43:36Z
dc.date.issued2012
dc.description.abstractChromate conversion coatings have been widely used in industry for a long time to improve the corrosion resistance galvanized steels. Hexavalent chromium, however, has high toxicity and carcinogenesis. Therefore, alternative and more environmentally friendly surface treatments need to be developed. Rare earth metal ions, such as cerium, is recognized as an effective corrosion inhibitor and environmentally friendly. In present study effects of Ce (III) and Ce (IV) ions on the corrosion behaviour of galvanised steel have been studied in 0.5 M Na 2 SO 3 solution. A composite coating of cerium and zinc has been prepared by pulse deposition technique and its effect on the inhibition of corrosion of galvanized steel has been evaluated in terms of E iv corr , Icorr and Tafel constants. It was found that the composite coating decreased the corrosion rate by more than 50 times. On the other hand, Ce (IV) ion was found to increase the corrosion rate due to taking part in cathodic reaction.en_US
dc.identifier.urihttps://hdl.handle.net/20.500.14540/14796
dc.language.isoen_USen_US
dc.publisherDepartment of Chemistryen_US
dc.subjectPotentiodynamic polarisationen_US
dc.subjectCircuit potentialen_US
dc.subjectHexavalent chromiumen_US
dc.subjectGalvanized steelsen_US
dc.titleEffect of Cerium Ions on the Corrosion of Galvanised Steel in 0.5 M Na 2 SO 3 Solutionen_US
dc.typeThesisen_US
local.academic.levelMastersen_US
local.institute.titleCentral Department of Chemistryen_US
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