Effects of Cr content and environmental factors on FAC rate of carbon steels

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Combined effects of Cr content and environmental factors, pH and dissolved oxygen concentration, on removal rate of carbon steels due to flow accelerated corrosion have been examined by experiments. The effects of environmental factors on FAC rate have been attempted to interpret based on oxide solubility, which has been precisely evaluated by separate experiments and numerical estimations. pH dependency of the FAC rate has been found to be directly related to solubility of magnetite. Cr content holds a strong impact on the FAC rate regardless of pH values from 6.84 to 10.4. Addition of 1% Cr to a carbon steel reduces the FAC rate by one order of magnitude under the environmental conditions, where magnetite forms. Addition of oxygen up to 1200ppb changes the oxide from magnetite to hematite, resulting in significant improvement in corrosion resistance. Oxide film characteristics, e.g. compositional distributions and types of oxide compound, have been also examined and their correlation to the FAC rate has been discussed.

Original languageEnglish
Title of host publicationProceedings of the ASME Pressure Vessels and Piping Conference 2009 - Materials and Fabrication
Pages933-936
Number of pages4
EditionPART A
DOIs
Publication statusPublished - 2010 Jun 7
Event2009 ASME Pressure Vessels and Piping Conference - Prague, Czech Republic
Duration: 2009 Jul 262009 Jul 30

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
NumberPART A
Volume6
ISSN (Print)0277-027X

Other

Other2009 ASME Pressure Vessels and Piping Conference
CountryCzech Republic
CityPrague
Period09/7/2609/7/30

ASJC Scopus subject areas

  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Effects of Cr content and environmental factors on FAC rate of carbon steels'. Together they form a unique fingerprint.

Cite this