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
Effect of climatic parameters on filiform corrosion of coated aluminium alloys AA6016
RISE - Research Institutes of Sweden, Materials and Production, KIMAB. (Institut de la Corrosion)
RISE - Research Institutes of Sweden, Materials and Production, KIMAB.
RISE - Research Institutes of Sweden, Materials and Production, KIMAB. (Institut de la Corrosion)
Statoil ASA, Norway.
2003 (English)In: NACE - International Corrosion Conference Series, National Association of Corrosion Engineers International , 2003Conference paper, Published paper (Refereed)
Abstract [en]

The effects of temperature, relative humidity and wet dry transition on initiation and propagation of filiform corrosion on coated aluminium alloys AA6016 have been studied. The aluminium surfaces were tested in both milled and grinded conditions with chromium, phosphate and titanium-zirconium based pretreatment. A full paint system used for automotive applications (ED coat + top-coat) and an electrodeposited coat (ED coat) were investigated for the different combinations of mechanical finish, surface pretreatment and coating system. In the temperature range between 5 to 50°C, filiform corrosion, or underfilm corrosion in general, increased significantly. The effect of relative humidity and wet-dry cycling on the other hand, seems to be strongly influenced by parameters like pretreatment, coating system, and also temperature. Filiform corrosion was the highest in the range 75 to 95 % relative humidity and a distinct maximum was observed at 85% R.H. for some coating systems. However, filiform corrosion propagated at humidity down to 40-50% R.H. For specimens with chromate and phosphate based surface pretreatments, filiform corrosion was lower after exposure to tests with wet-dry cycles. The samples with titanium-zirconium based pretreatments, on the other hand, had a very poor filiform corrosion resistance in the cyclic test compared to exposures at constant relative humidity. © 2003 by NACE International.

Place, publisher, year, edition, pages
National Association of Corrosion Engineers International , 2003.
Keywords [en]
Aluminium alloys, Climatic parameters, Coatings, Filiform corrosion, Pretreatments, Temperature, Aluminum alloys, Aluminum corrosion, Atmospheric corrosion, Chromates, Corrosion resistance, Titanium, Zirconium, Automotive applications, Effects of temperature, Initiation and propagation, Pre-treatments, Surface pre-treatments, Surface pretreatment, Localized corrosion
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:ri:diva-40453Scopus ID: 2-s2.0-85046856419OAI: oai:DiVA.org:ri-40453DiVA, id: diva2:1359741
Conference
Corrosion 2003; San Diego; United States; 16 April 2003 through 20 April 2003
Note

This work is part of a research program at the Swedish Corrosion Institute, financially supported by Pechiney, PSA, Renault, Sapa Technology, Volvo Car Co and VINNOVA. The participants are gratefully acknowledged.

Available from: 2019-10-10 Created: 2019-10-10 Last updated: 2019-10-14Bibliographically approved

Open Access in DiVA

No full text in DiVA

Scopus
By organisation
KIMAB
Chemical Engineering

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
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