Influence of nanoporous structure on mechanical strength of aluminium and aluminium alloys adhesive structural joints

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10 Citazioni (Scopus)

Abstract

The influence of surface treatments on the mechanical strength of adhesivejoints was investigated. The attention was focused on AA2024 alloy becauseit is extensively used in both the automotive and aerospace industries. Adhesivejoints fabricated with pure aluminium were also investigated in order toevidence possible differences in the surface features after identical treatments.Before joining with a commercial epoxy adhesive, metal substrates weresubjected to different kinds of treatment and the surfaces were characterizedby SEM analysis. The formation of a microporous surface in the AA2024alloy, upon etching and anodizing, is discussed on the basis of the role ofthe intermetallic particles and their electrochemical behaviour with respectto the aluminium matrix. Moreover, nanostructured porous oxide layers onboth type of substrate were also formed, as a consequence of the anodizingprocess. Differences in their morphologies were revealed as a function of boththe applied voltage and the presence of alloying elements. On this basis, anexplanation of the different values of fracture energy measured by means ofT-peel tests carried out on the corresponding joints was attempted.
Lingua originaleEnglish
pagine (da-a)S2007-S2018
Numero di pagine12
RivistaJOURNAL OF PHYSICS. CONDENSED MATTER
Volume18
Stato di pubblicazionePublished - 2006

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Aluminum
aluminum alloys
adhesives
Strength of materials
Aluminum alloys
Adhesives
aluminum
aerospace industry
anodizing
Fracture energy
Aerospace industry
Anodic oxidation
Substrates
Alloying elements
surface treatment
Automotive industry
Joining
Oxides
alloying
Intermetallics

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cita questo

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title = "Influence of nanoporous structure on mechanical strength of aluminium and aluminium alloys adhesive structural joints",
abstract = "The influence of surface treatments on the mechanical strength of adhesivejoints was investigated. The attention was focused on AA2024 alloy becauseit is extensively used in both the automotive and aerospace industries. Adhesivejoints fabricated with pure aluminium were also investigated in order toevidence possible differences in the surface features after identical treatments.Before joining with a commercial epoxy adhesive, metal substrates weresubjected to different kinds of treatment and the surfaces were characterizedby SEM analysis. The formation of a microporous surface in the AA2024alloy, upon etching and anodizing, is discussed on the basis of the role ofthe intermetallic particles and their electrochemical behaviour with respectto the aluminium matrix. Moreover, nanostructured porous oxide layers onboth type of substrate were also formed, as a consequence of the anodizingprocess. Differences in their morphologies were revealed as a function of boththe applied voltage and the presence of alloying elements. On this basis, anexplanation of the different values of fracture energy measured by means ofT-peel tests carried out on the corresponding joints was attempted.",
author = "Carmelo Sunseri and Clelia Dispenza and Chiara Spadaro",
year = "2006",
language = "English",
volume = "18",
pages = "S2007--S2018",
journal = "JOURNAL OF PHYSICS. CONDENSED MATTER",
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TY - JOUR

T1 - Influence of nanoporous structure on mechanical strength of aluminium and aluminium alloys adhesive structural joints

AU - Sunseri, Carmelo

AU - Dispenza, Clelia

AU - Spadaro, Chiara

PY - 2006

Y1 - 2006

N2 - The influence of surface treatments on the mechanical strength of adhesivejoints was investigated. The attention was focused on AA2024 alloy becauseit is extensively used in both the automotive and aerospace industries. Adhesivejoints fabricated with pure aluminium were also investigated in order toevidence possible differences in the surface features after identical treatments.Before joining with a commercial epoxy adhesive, metal substrates weresubjected to different kinds of treatment and the surfaces were characterizedby SEM analysis. The formation of a microporous surface in the AA2024alloy, upon etching and anodizing, is discussed on the basis of the role ofthe intermetallic particles and their electrochemical behaviour with respectto the aluminium matrix. Moreover, nanostructured porous oxide layers onboth type of substrate were also formed, as a consequence of the anodizingprocess. Differences in their morphologies were revealed as a function of boththe applied voltage and the presence of alloying elements. On this basis, anexplanation of the different values of fracture energy measured by means ofT-peel tests carried out on the corresponding joints was attempted.

AB - The influence of surface treatments on the mechanical strength of adhesivejoints was investigated. The attention was focused on AA2024 alloy becauseit is extensively used in both the automotive and aerospace industries. Adhesivejoints fabricated with pure aluminium were also investigated in order toevidence possible differences in the surface features after identical treatments.Before joining with a commercial epoxy adhesive, metal substrates weresubjected to different kinds of treatment and the surfaces were characterizedby SEM analysis. The formation of a microporous surface in the AA2024alloy, upon etching and anodizing, is discussed on the basis of the role ofthe intermetallic particles and their electrochemical behaviour with respectto the aluminium matrix. Moreover, nanostructured porous oxide layers onboth type of substrate were also formed, as a consequence of the anodizingprocess. Differences in their morphologies were revealed as a function of boththe applied voltage and the presence of alloying elements. On this basis, anexplanation of the different values of fracture energy measured by means ofT-peel tests carried out on the corresponding joints was attempted.

UR - http://hdl.handle.net/10447/3160

M3 - Article

VL - 18

SP - S2007-S2018

JO - JOURNAL OF PHYSICS. CONDENSED MATTER

JF - JOURNAL OF PHYSICS. CONDENSED MATTER

SN - 0953-8984

ER -