Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Crevice and pitting corrosion of stainless-steel and nickel based alloys in deep sea water
RISE - Research Institutes of Sweden, Materials and Production, KIMAB. (Institut de la Corrosion)
RISE - Research Institutes of Sweden, Materials and Production, KIMAB. (Institut de la Corrosion)
RISE - Research Institutes of Sweden, Materials and Production, KIMAB. (Institut de la Corrosion)
2019 (English)In: NACE - International Corrosion Conference SeriesVolume 2019-March, 2019, Article number 13337Corrosion Conference and Expo 2019; Nashville; United States; 24 March 2019 through 28 March 2019;, National Assoc. of Corrosion Engineers International , 2019Conference paper, Published paper (Refereed)
Abstract [en]

The exploration and exploitation of deep seawater present promising prospects for many industries. Hence, the use of reliable materials resistant to corrosion in deep seawater conditions is required. In natural seawater, many parameters can influence the kinetics of corrosion such as: temperature, oxygen content, biofilm and fouling activity, flow rates and hydrostatic pressure. For passive materials such as Cr Ni Mo stainless steels and nickel-based alloys, the specificity of the above parameters in deep sea environment might have an impact on both initiation and propagation phases of localized corrosion (e.g. pitting and crevice corrosion), and no or limited field data obtained in deep sea can be found in the literature. Currently, there are still many questions on the corrosion behavior of metallic materials in deep seawater since the results obtained in laboratory or from near-surface seawater cannot be extrapolated to deep seawater environments, especially in terms of bacterial activity which can significantly impact the localized corrosion resistance of passive alloys (cf. biofilm-induced ennoblement). In this study, 13-Cr Ferritic, Austenitic, Lean Duplex, Duplex, Super Duplex, Super Austenitic, Hyper Duplex Stainless Steels and Nickel based alloys were exposed during 11 months at 1020 and 2020 m water depth in the Atlantic Ocean to evaluate their corrosion behavior. Structural carbon steel S355 was also exposed under similar conditions. Polyvinylidene difluoride (PVDF) crevice gaskets according to ISO18070:2015 were used to assess the crevice corrosion at two different gasket pressures, namely 3 and 20 N/mm2. Potential monitoring was performed in-situ (at both 1020 m and 2020 m) in order to characterize the formation of electroactive biofilms at the surface of passive alloys in these environments. At each exposure depth, the environment was characterized using environmental sensors, e.g. temperature, flow velocity, dissolved oxygen, salinity. The obtained results allowed i) ranking the passive material in terms of resistance to pitting and crevice corrosion in deep water at 4°C, ii) comparing biofilm electroactivity and corrosion rates at 1020 and 2020 m depth.

Place, publisher, year, edition, pages
National Assoc. of Corrosion Engineers International , 2019.
Keywords [en]
Biofilm, Deepsea corrosion, Nickel-based alloys, Seawater, Stainless steels, Austenite, Biochemical oxygen demand, Biofilms, Corrosion rate, Corrosion resistance, Corrosion resistant alloys, Corrosive effects, Crevice corrosion, Dissolved oxygen, Duplex stainless steel, Ferritic stainless steel, Flow velocity, Gaskets, Hydrostatic pressure, Molybdenum steel, Nickel alloys, Nickel steel, Seawater corrosion, Stainless steel, Steel corrosion, Environmental sensor, Exploration and exploitation, Initiation and propagation, Nickel based alloy, Polyvinylidene difluoride, Potential monitoring, Seawater environment, Structural carbon steel, Pitting
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-39992Scopus ID: 2-s2.0-85070057290OAI: oai:DiVA.org:ri-39992DiVA, id: diva2:1361639
Conference
NACE - International Corrosion Conference Series Volume 2019-March, 2019, Article number 13337 Corrosion Conference and Expo 2019; Nashville; United States; 24 March 2019 through 28 March 2019;
Available from: 2019-10-16 Created: 2019-10-16 Last updated: 2019-10-16Bibliographically approved

Open Access in DiVA

No full text in DiVA

Scopus
By organisation
KIMAB
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 2 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
v. 2.35.8