Factors controlling pitting of stainless steels under wet deposits in splash zones in chlorine dioxide bleaching

Tero Hakkarainen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

A compact experimental laboratory arrangement was set up to investigate the effects of the main variables on pitting of stainless steels in environments simulating those under wet deposits occurring, e.g., in splash zones in washers in chlorine dioxide bleaching. Results illustrating the effects of the variables are shown for stainless steels corresponding to types UNS S31726 and UNS S31254. Most of the experiments described were made at 70 °C in the presence of chlorine dioxide. Various aspects of the test method and the effects of the variables are discussed. It is demonstrated that the content of sulfate ions required to prevent pitting depends, in addition to the content of chloride ions, also on the steel grade and the temperature.
Original languageEnglish
Title of host publicationProceedings of the 9th International Symposium on Corrosion in the Pulp and Paper Industry
Subtitle of host publicationPreprints Of Presentations
PublisherCanadian Pulp and Paper Association (CPPA)
Pages97-101
ISBN (Print)978-1-896742-28-1
Publication statusPublished - 1998
MoE publication typeA4 Article in a conference publication
Event9th International Symposium on Corrosion in the Pulp and Paper Industry - Ottawa, Canada
Duration: 26 May 199829 May 1998

Conference

Conference9th International Symposium on Corrosion in the Pulp and Paper Industry
Country/TerritoryCanada
CityOttawa
Period26/05/9829/05/98

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