Passivity breakdown of carbon steel in hot potassium carbonate solutions

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dc.contributor.authorHarjac, S.
dc.contributor.authorAtrens, A.
dc.contributor.authorMoss, C.
dc.contributor.authorLinton, V.
dc.date.issued2007
dc.descriptionThe original publication can be found at www.springerlink.com
dc.description.abstractThis research studied passivity breakdown of carbon steel in conditions typical of hot potassium carbonate (HPC) acid gas processing plants. The pitting potential, evaluated from polarisation curves, indicated resistance to pitting increased with increasing equivalent carbonate concentration. The pitting potential was much more positive than the free corrosion potential for uninhibited concentrated carbonate solutions with pH values of 8.5 to 9.5. Therefore pitting is not an issue in these solutions. However, the carbon steel was susceptible to pitting corrosion in the dilute 1.0% bicarbonate solution of pH 8.0 for chloride concentrations in excess of 0.5 wt%. The critical chloride concentration was considerably above the maximum concentration of 0.1 wt% recorded in a typical HPC plant. Consequently chlorides should not usually be of concern to plant integrity.
dc.description.statementofresponsibilityS. J. Harjac, A. Atrens, C. J. Moss and V. Linton
dc.identifier.citationJournal of Materials Science, 2007; 42(24):9940-9946
dc.identifier.doi10.1007/s10853-007-2076-x
dc.identifier.issn0022-2461
dc.identifier.issn1573-4803
dc.identifier.urihttp://hdl.handle.net/2440/44306
dc.language.isoen
dc.publisherKluwer Academic Publ
dc.source.urihttps://doi.org/10.1007/s10853-007-2076-x
dc.titlePassivity breakdown of carbon steel in hot potassium carbonate solutions
dc.typeJournal article
pubs.publication-statusPublished

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