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Träfflista för sökning "L773:1478 422X OR L773:1743 2782 srt2:(2020-2021)"

Search: L773:1478 422X OR L773:1743 2782 > (2020-2021)

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1.
  • Peltier, Fabienne, et al. (author)
  • Localised corrosion of intermetallic particles on aluminium AA2099-T8
  • 2021
  • In: Corrosion Engineering, Science and Technology. - : Taylor and Francis Ltd.. - 1478-422X .- 1743-2782. ; 56:7, s. 610-
  • Journal article (peer-reviewed)abstract
    • Specimens of AA2099-T8 were immersed for different times ranging from 2 to 180 min in 0.1M NaCl. The development of corrosion around intermetallic particles was studied by scanning electron microscopy (SEM) with energy-dispersive X-ray spectrometry (EDXS). The degradation evolution of each major intermetallic particle after exposure of the alloy to electrolyte allowed to determine which particle corroded during the first stages of immersion. The corrosion of lithium-containing particles was also investigated by transmission electron microscopy (TEM). The earliest stages of attack started with localised corrosion of Al2CuMg (S-phase) particles resulting in dealloying which was followed by trenching around these particles. After 10 min, trenching was observed around Al7Cu2Fe(Mn) particles and then progressed to AlCuFeMnSi particles after 90 min. 
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2.
  • Thierry, Dominique, et al. (author)
  • Long-term atmospheric corrosion of Zn–5%Al-coated steel and HDG during outdoor worldwide exposures
  • 2020
  • In: Corrosion Engineering, Science and Technology. - : Taylor and Francis Ltd.. - 1478-422X .- 1743-2782. ; 55:7, s. 520-530
  • Journal article (peer-reviewed)abstract
    • Hot-dipped galvanised (HDG) steel and Zn5Al-coated steel were exposed for 6 years at different atmospheric weathering sites worldwide. The mass loss of the coatings has been measured after 1, 2, 4 and 6 years of exposure. In addition, corrosion products have been determined using scanning electron microscopy, X-ray diffraction and FTIR spectroscopy. It is shown that Zn5Al is better than HDG-steel independently on the exposure duration and location. The mass loss of Zn5Al is also less dependent of the environmental parameters (such as chloride deposition, relative humidity and temperature) than HDG-steel. The ratio of performance after 6 years of exposure varied from 1.3 to 5.1 with the mean value of 3.1. The analyses of the corrosion products indicate the formation of protective Zn/Al - (Formula presented.) layered double hydroxide (LDH) and sulphate-containing corrosion products of Zn and Al after 6 years of exposure. A mechanism explaining the superior properties of Zn5Al is proposed. 
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  • Result 1-2 of 2
Type of publication
journal article (2)
Type of content
peer-reviewed (2)
Author/Editor
Thierry, Dominique (2)
Persson, Dan (1)
Peltier, Fabienne (1)
Väisänen, P. (1)
Le Gac, A. (1)
LeBozec, Natalie (1)
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Peltola, A. (1)
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University
RISE (2)
Language
English (2)
Research subject (UKÄ/SCB)
Engineering and Technology (1)

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